Dr. Nagmani

The Carbon That Could: Powering India's Clean Energy Dreams

2025-09-09T13:08:00.005+05:30

At Samavay 2025, the Department of Chemical Engineering, IIT Kanpur took center stage with an impressive showcase of cutting-edge research aligned with this year’s theme — Sustainability: Research and Innovation. The department's display highlighted impactful solutions aimed at creating a greener, cleaner future through scientific innovation.

One of the standout contributions came from Prof. Raju Kumar Gupta’s Lab, where Dr. Nagmani and his team presented their pioneering work on:
🔋 "Development of Low-cost, Sustainable, and Scalable Hard Carbon Anode for Next-Generation Sodium-ion Batteries."

Their live technology demonstration drew tremendous interest from both industry professionals and academic researchers, emphasizing the global relevance of sustainable energy storage. What made the project truly remarkable was the indigenous development of a hard carbon material that not only rivals but outperforms commercially available options — all while being cost-effective and scalable.

This innovation holds immense promise for the future of sodium-ion battery commercialization and marks a significant step toward self-reliant, eco-friendly, and scalable energy solutions. It beautifully reflects the goals of Atmanirbhar Bharat and reinforces India’s commitment to clean energy transitions.

The excitement and engagement at the booth were a testament to the real-world impact of this research, positioning IIT Kanpur at the forefront of sustainable innovation.

IITKanpur Samanvay2025 Innovation DST ANRF EnergyStorage AtmanirbharBharat BatteryTechnology Sustainability SodiumIonBatteries MakeInIndia

Indian Institute of Technology, Kanpur Anusandhan National Research Foundation (ANRF) Department of Science & Technology, Government of India

Battery Research Group at IIT Kanpur

Advanced Characterization Techniques for Insights into the Sodium Storage Mechanism of Hard Carbon Anodes: Recent Advances and Future Perspectives

2024-09-21T14:02:00.008+05:30

ACS Energy & Fuels (IF = 5.3), Publication Date = 20 September 2024

DOI: https://doi.org/10.1021/acs.energyfuels.4c01707

Authors: Nagmani,* Ashish Kumar, Chandra Gowthami, Ravula Vijay, Tata Narasinga Rao, Srinivasan Anandan

ABSTRACT: Non-graphitizable hard carbon (HC) possesses numerous surface imperfections, functional groups, and randomly arranged graphene sheets (turbostratic), generating micro/meso/macropores. The sodium-ion storage mechanism in HC anodes remains unclear as it heavily relies on the diverse structures resulting from different precursor materials and heat treatment temperatures used for HCs. Various models have been anticipated to comprehend the analysis of structural and sodium storage mechanisms in HCs. Amidst conflicting reports, the prevailing storage model suggests an “adsorption–intercalation–filling” mechanism. It is widely accepted that lithium insertion into the graphene interlayer forms “graphitic intercalation compounds” (GICs), which involve an intercalation mechanism. Conversely, the formation of sodium-based GICs is thermodynamically unstable, and most sodium storage is attributed to the pore-filling mechanism, resulting in the formation of pseudo-metallic clusters at a lower potential, near 0 V. The primary topic of debate regarding the storage mechanism revolves around whether the low-potential plateau capacity arises from intercalation, pore filling, or metallic deposition. In this review, we mainly highlight and discuss the advanced characterization techniques, including operando techniques, such as Raman spectroscopy, X-ray diffraction, electron paramagnetic resonance, nuclear magnetic resonance, and small-angle X-ray scattering, to monitor the detailed mechanism. Therefore, we hope that this review can assist readers in understanding the charge storage relation in detail to enhance the HC performance to advance its practical application for sodium-ion batteries

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Breakthrough in Sodium-Ion Battery Technology: Unmodified Hard Carbon Anode with High Capacity of 422 mAh/g and Energy Density Unveiled

2024-04-11T20:09:00.007+05:30

Date: 16-02-2024

Researchers from the Indian Institute of Technology Kharagpur have achieved a significant breakthrough in sodium-ion battery technology with their work published in the prestigious international blind peer-reviewed journal Chemical Communication by The Royal Society of Chemistry. The study introduces micro-spherical hard carbons (MSHCs) with distinctive porosity features, synthesized through an innovative microwave-assisted solvothermal pre-treatment of sucrose, followed by carbonization. These MSHCs exhibit exceptional properties, including large interlayer spacing of turbostratic graphene nanosheets, hierarchical pore structures, and closed pores, resulting in outstanding performance as anodes for sodium-ion batteries. With a high reversible capacity of 422 mA h/g at a 0.1C rate and outstanding capacity retention of 84% after 500 cycles at 1C, the MSHC sets a new standard for sodium storage performance. Further analyses reveal a mechanism shift from intercalation to quasi-metallic sodium clusters in the closed pores at low potentials, confirmed by GITT and EPR measurements. When paired with a P2-Na0.67Ni0.33Mn0.67O2 (NNMO) cathode, the MSHC anode enables a full cell to achieve a high energy density of 292 W h/kg at a working potential of 3.2 V, showcasing its potential for advancing energy storage technologies.

Authors: Nagmani, S Manna and Sreeraj Puravankara

Read this article: https://doi.org/10.1039/D4CC00025K

Nagmani received International Travel Award from Science and Engineering Research Board, Government of India to present his scientific work at the Prestigious Electrochemical Society Meeting, Gothenburg Sweden.

2023-10-04T21:37:00.005+05:30

Young Scientist Mr Nagmani from the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad has been awarded an International Travel Award from the Science and Engineering Research Board, DST, Government of India for the 244th Electrochemical Society (ECS) Meeting at Gothenburg, Sweden (October 8-12, 2023). ECS is one of the prestigious scientific events in the field of batteries and supercapacitors research across the globe.

Nagmani's research work has been selected by the ECS scientific committee for an oral presentation. He will present the strategy to improve the initial Coulombic efficiency of carbon anode using ether-based electrolytes for wide-temperature application sodium-ion batteries. Before joining ARCI, he submitted his doctoral dissertation on diverse precursor-based hard carbon anodes for sodium-ion and potassium-ion batteries at the School of Energy Science and Engineering, IIT Kharagpur. He has published more than 10 high-impact international peer-reviewed journals in the American Chemical Society, the Royal Society of Chemistry, Wiley and Elsevier with an average impact factor of 6.25.

The international travel grant will help him to present his work and allow him to interact and learn as a building early career researcher.

Utilization of PET derived hard carbon as a battery-type, higher plateau capacity anode for sodium-ion and potassium-ion batteries

2023-09-27T11:46:00.002+05:30

Journal of Electroanalytical Chemistry: (IF = 4.5); Publication Date: 20 August 2023

DOI: https://doi.org/10.1016/j.jelechem.2023.117731

Author(s): Nagmani, and Sreeraj Puravankara

Abstract

Trash to Treasure is a less energy-intensive approach for upcycling plastic waste into value-added products to generate sustainable, cost-effective, eco-friendly materials. The carbonization of polyethylene terephthalate (PET) via a single-step process into hard carbon (HC) delivers a high-performing anode material for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). Direct pyrolysis of PET waste increases the interlayer spacing with partially closed slit-shaped micro and mesopores that significantly improves the lower potential plateau-based capacity to 68% of the total capacity, validating a battery-type anode material. The HC carbonized at 1000℃ delivers a reversible capacity of 337 mAh/g with capacity retention of 88% after 100 cycles at 30 mAh/g. The HC exhibits 80% capacity retention even after 1000 cycles at a 1C rate and is promising for fast cycling-high power density applications. In PIBs, the HC carbonized at 800℃ performs the best and shows a reversible capacity of 305 mAh/g, with a battery-type low voltage plateau contribution of 32%. The charge storage mechanism in SIBS and PIBs follows a three-stage storage mechanism, i.e., adsorption, intercalation, and pore-filling.

Read Online @ https://doi.org/10.1016/j.jelechem.2023.117731

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Effect of pore morphology on the enhanced potassium storage in hard carbon derived from polyvinyl chloride for K-ion batteries

2023-08-06T00:17:00.010+05:30

Electrochimica Acta: (IF = 6.6); Publication Date: 20 July 2023

DOI: https://doi.org/10.1016/j.electacta.2023.142903

Author(s): Nagmani, A Tyagi. P Verma, and Sreeraj Puravankara

Abstract

Potassium-ion batteries (PIBs), with a bigger shuttling cation (K+), compete with Lithium-ion batteries (LIBs) for future energy storage due to the higher mobility of the solvated ions and lesser desolvation energy during energy storage. Developing stable anode material with excellent battery metrics is challenging in PIBs. Graphite, a promising anode for PIBs, faces poor structural stability from massive volume expansion of 61% during intercalation. The hard carbons (HCs) with a pseudo graphitic domain with rich pores and defects can accommodate more potassium ions without significant structural degradation. In this work, we upcycled the polyvinylidene chloride (PVC) to synthesize low-cost, green, and sustainable HCs anode material for PIBs. PVC-derived HCs from commercial and waste PVC shows high reversible capacities of 477 mAh g−1 and 378 mAh g−1, respectively, at 0.1C, much superior to the reported HCs. The pore morphology is critical for the battery performance, with the partially closed ink-bottle-shaped mesopores of CPVC exhibiting better initial Coulombic efficiency (ICE) than the wedge-shaped open pores of WPVC. The distinct K+ storage mechanism is revealed through differential capacity plots, GITT, and CV analysis to confirm a three-stage storage via surface adsorption, intercalation, and pore-filling mechanism. The full-cell KǁPBA, using Prussian white as the cathode, delivers 284 Wh kg−1 with 93% retention over 1000 cycles at a 1C rate. Upcycling PVC plastics into value-added HC battery electrodes with excellent performance helps generate cost-effective and sustainable resources for a circular materials economy and provides a cheap, green, and sustainable anode material for PIBs.

Read Online @ https://doi.org/10.1016/j.electacta.2023.142903

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Utilization of Single Biomass-derived Micro-Mesoporous Carbon for Dual-Carbon Symmetric and Hybrid Sodium-ion Capacitors

2023-06-09T12:08:00.003+05:30

New Journal of Chemistry (Royal Society of Chemistry): (IF = 3.925); Publication Date: 03 June 2023

DOI: https://doi.org/10.1039/D3NJ01349A

Author(s): Nagmani, Biraj Kanta Satpathy, Abhijeet Kumar Singh, Debabrata Pradhan, and Sreeraj Puravankara

Abstract

Sodium-ion capacitors (SICs) have emerged significantly in the last decades due to their high energy, high power with rapid energy deliverability, and sustainability quotient as an alternative to lithium-ion capacitors (LICs). In this study, a jute-based precursor-derived carbon is chemically activated with or without microwave pretreatment and tested in aqueous and non-aqueous symmetric and asymmetric SICs. The synthesized microwave pretreated activated carbon (AJPC-M) exhibits more defect and micro/ mesoporosity with a high surface area of 1529.75 m² g^-1 with a high specific capacitance of 1166 F g^-1 at the current density of 1 A g^-1 and excellent rate capability of 470 F g^-1 at 10 A g^-1 in the three-electrode aqueous system. The symmetric sodium-ion capacitor (SSIC) with AJPC-M-based capacitor in an aqueous medium delivered a high energy density of 37.7 Wh kg^- 1 at the specific power of 785 W kg^-1 and a maximum specific power of 7895 W kg^-1 with a specific energy of 9.75 Wh kg^-1at 1 A g^- 1and 10 A g^-1, respectively. 100% gravimetric capacitance is retained for 9000 cycles at 8 A g^-1. In the non-aqueous system, the AJPC-M cathode displays the specific capacity of 89 mAh g^-1 at the current density of 0.02 A g^-1. The symmetric sodium-ion capacitor (SSIC) in a non-aqueous system delivers a maximum energy density of 60 Wh kg^-1 at a specific power of 510 W kg^-1and a maximum specific power of 3570 W kg^-1. The concept checks on the hybrid sodium-ion asymmetric capacitor (ASIC) with activated (APJC-M) as cathode and hard carbon (JPC-D) as the anode, derived from the same jute-based precursor, delivered an improved performance with 86 Wh kg^-1 at a specific power of 636 W kg^-1and realized a maximum specific power of 3440 W kg^-1. The excellent electrochemical capacitance of jute-derived micro-mesoporous activated carbon with more defects, high surface area, larger pore volume, and optimum pore size distribution demonstrates a cost-effective porous activated carbon for powering both anode and cathode for both symmetric and hybrid SIC devices.

Read Online @ https://doi.org/10.1039/D3NJ01349A

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Low-cost and sustainable micro/mesoporous hard carbon derived from Jute-waste for promising high-performance Sodium and Potassium-ion batteries with distinct storage mechanism

2022-12-11T16:15:00.007+05:30

Langmuir: (IF = 4.331); Publication Date: 09 December 2022

DOI: https://doi.org/10.1021/acs.langmuir.2c02575

Author(s): Nagmani, Prakhar Verma, and Sreeraj Puravankara

Abstract

Hard carbon (HC) remains the most viable choice as a negative electrode for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs) owing to its higher energy density (discharge up to zero volts), higher capacity (distinct storage mechanisms), and cycling stability. Herein, a biomass jute fiber precursor HC anode (JPC) with varying porosity is reported for the first time as a low-cost and sustainable high-performance HC anode for SIBs and PIBs. Direct carbonization results in micro-meso porous HC (JPC-D), and micro-wave pretreated jute fiber results in ultramicroporous HC (JPC-M). The mesoporosity generated in JPC-D during synthesis outperforms the ultramicroporous JPC-M with a high reversible capacity of 328 mAh g–1 (iCE = 66%) at a current density of 30 mA g–1 (0.1C) with superior capacity retention of 84% after 100 cycles in SIBs. The Na+ ion and K+ ion storage in HCs, especially at lower voltages, shows distinct storage mechanisms that depend on the morphology and porosity of the material. JPC-D contributed 39% of its total capacity through the plateau region capacity (PRC), suggesting more pore filling from hierarchical porosity in SIBs. JPC-D and JPC-M exhibit more insertion-based capacity than pore-filling processes in PIBs. The presence of inorganic impurities (Ca, Si, Al, and Fe) encapsulated in the carbon structure plays a critical role in developing mesopores. The yield (%) of HC from direct carbonization per kilogram of jute is ∼34%, which makes it cheaper than HC from sugar-based precursors and 1.5 times more affordable than other biomass-derived HC. The jute-based micro-mesoporous HC is a novel, cost-effective, sustainable approach to designing HC for a PRC-based battery-type anode in SIBs and PIBs.

Read Online @ https://doi.org/10.1021/acs.langmuir.2c02575

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Are Na-ion batteries nearing the energy storage tipping point? – Current status of non-aqueous, aqueous, and solid-sate Na-ion battery technologies for sustainable energy storage

2022-11-03T18:10:00.009+05:30

Journal of Energy Storage (IF = 8.907); Publication Date: 03 November 2022

DOI: https://doi.org/10.1016/j.est.2022.105961

Author(s): Nagmani, Debanjana Pahari, Prakhar Verma, and Sreeraj Puravankara

Abstract

The growth of renewable energy generation has been unprecedented in the last two decades. Although renewable energy generation offers an alternative to the growing energy needs, the intermittency in power supply and demand makes energy storage an inevitable part of energy generation and distribution. Here, battery energy storage systems (BESS) play a significant role in renewable energy implementation for balanced power generation and consumption. A cost-effective alternative in electrochemical storage has led us to explore sustainable successors for Li-ion battery technology (LIBs). The rechargeable batteries mainly include Na+, K+, Mg2+, Ca2+, and Zn2+ ion technologies. High-temperature sodium storage systems like NaS and Na-NiCl2, where molten sodium is employed, are already used. In ambient temperature energy storage, sodium-ion batteries (SIBs) are considered the best possible candidates beyond LIBs due to their chemical, electrochemical, and manufacturing similarities. The resource and supply chain limitations in LIBs have made SIBs an automatic choice to the incumbent storage technologies. Shortly, SIBs can be competitive in replacing the LIBs in the grid energy storage sector, low-end consumer electronics, and two/three-wheeler electric vehicles. We review the current status of non-aqueous, aqueous, and all-solid-state SIBs as green, safe, and sustainable solutions for commercial energy storage applications.

Read Online @ https://doi.org/10.1016/j.est.2022.105961

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Gallery Section

2022-06-26T15:18:00.018+05:30

Battery Research Group at Indian Institute of Technology Kanpur, presenting their indigenous Hard Carbon Anode for Sodium-ion Battery

At the 244th Electrochemical Society Meeting, Gothenburg, Sweden with Prof. Shinichi Komaba

Presentation at the 244th Electrochemical Society (ECS), Gothenburg, Sweden

Great time with my Supervisor and lab colleagues

At Research Institute of Sustainable Energy, TCG Crest, Kolkata with Prof. Sreeraj Puravankara, Dr. Debanajana Pahari and Mr. Dhrubajyoti Das.

Convocation @ CUJ (Integrated B Tech & M Tech Degree)

Convocation @ CUJ (Gold Medalist)

Convocation @ CUJ (with Hon'ble President of India)

@ Sarnath, Varanasi with Prof. Sreeraj Puravankara

Oral Talk: @ B-FAT- 2020, National Conference, IIT (BHU), Varanasi

School of Energy Science and Engineering,

Sir. J. C. Bose Laboratory Complex, IIT Kharagpur

Indian Institute of Technology Kharagpur (Old Building)

Optimizing ultramicroporous hard carbon spheres in carbonate ester-based electrolytes for enhanced sodium storage in half-/full-cell sodium-ion batteries

2022-06-23T16:44:00.007+05:30

Wiley Battery Energy; Publication Date: June 22, 2022

DOI: https://doi.org/10.1002/bte2.20220007

Author(s): Nagmani (IIT Kharagpur); Sreeraj Puravankara (IIT Kharagpur)

Sodium-ion batteries (SIBs) have received considerable attention as promising next-generation energy storage systems due to a large abundance of sodium and ion storage chemistry similar to that of lithium-ion batteries (LIBs). We report ultramicroporous hard carbon microspheres (HCMSs) derived from sucrose via a microwave-assisted solvothermal reaction as anode for SIBs. Because of the HCMSs with a larger interlayer spacing in graphitic domains and ultramicropores, it delivers excellent 3-RC features (reversible capacity, rate capability, and retention of capacity) reported to date for hard carbons derived from sugar-based carbon precursors through electrolyte optimization of carbonate esters (EC:PC, EC:DEC, EC:DMC). The HCMS-PC delivered the best reversible capacity of 265 mAh g−1 at a current density of 300 mA g−1, showing 85.8% capacity retention after 100 cycles and 66.3% capacity retention after 500 cycles in a half-cell. A full-cell fabricated with an HCMS-PC anode and a Na3V2(PO4)3 cathode delivered reversible capacities of 81 and 48 mAh g−1 at current densities of 30 and 300 mA g−1, respectively.

Read online @ https://doi.org/10.1002/bte2.20220007

Enhanced Performance of Ultra-Microporous Hard Carbon Spheres as Anode in Half /Full Cells for Sodium-ion Batteries through Optimized Carbonate Ester Electrolytes

2022-05-25T20:29:00.006+05:30

Symposium:

EN05: Emerging Materials for Electrochemical Energy Storage Devices—Degradation andFailure Characterization—From Composition, Structure and Interfaces to Deployed Systems

Title: Enhanced Performance of Ultra-Microporous Hard Carbon Spheres as Anode in Half /Full Cells for Sodium-ion Batteries through Optimized Carbonate Ester Electrolytes.

Author(s): Nagmani, Sreeraj Puravankara

Presented @ 2022, MRS Spring Meeting

Abstract:

Sodium-ion batteries (SIBs) draw great attention for promising next-generation stationary energy storage systems. In the last two decades, many novel materials have been proposed as the anode for the application in SIBs.¹ Carbon-based anode materials have played a significant role for all alkali-ion-based batteries, due to low-cost fabrication, the abundance of precursors, and exclusively tunable mechanical and electronic properties.² However, the low working potential of carbon anode leads to unstable solid electrolyte interface (SEI) film and dendrite formation during cycling.³ Also, huge irreversible loss especially during an initial cycle and lower initial faradaic efficiency (IFE) becomes critical to optimize the electrode/electrolyte interface to boost the overall battery performance. SIBs commercialization demands better “3-RC features such as reversible capacity, rate capability, and retention of capacity”. It stimulates to explore electrolytes system to enhance 3-RC features in both half-cell and full-cells configuration using hard carbon based anode.

Herein, we report ultramicroporous hard carbon microspheres (HCMS) derived from sucrose via microwave-assisted solvothermal reaction as anode for SIBs. The HCMS with larger interlayer spacing in graphitic domains and ultra-micropores assists it in delivering excellent 3-RC features yet reported for hard carbons derived from sugar-based carbon precursors through electrolyte optimization of carbonate esters (EC: PC, EC: DEC, EC: DMC).^2,4 The HCMS with 1M NaClO₄ salt in EC: PC electrolyte delivered the best reversible capacity of 385 mAhg^-1 and 265 mAhg^-1 at a current density of 30 mAg^-1 and 300 mAg^-1, respectively. It exhibits the capacity retention of 85.8 % after 100 cycles and 66.3 % after 500 cycles in a half-cell. A full-cell fabricated with HCMS-PC anode and NVP cathode delivered a reversible capacity of 81 mAhg^-1 and 48 mAhg^-1 at a current density of 30 mAg^-1 and 300 mA g^-1, respectively. The high reversible storage capacity with low IIRL, better cyclic stability, with excellent rate performance from 30 mAg^-1 to 3000 mAg^- 1 make HCMS the best sugar-based HC as anode materials for SIBs.

References:

(1) Zhang, H.; Hasa, I.; Passerini, S. Beyond Insertion for Na-Ion Batteries: Nanostructured Alloying and Conversion Anode Materials. Adv. Energy Mater. 2018, 8 (17). https://doi.org/10.1002/aenm.201702582.

(2) Nagmani.; Puravankara, S. Insights into the Plateau Capacity Dependence on the Rate Performance and Cycling Stability of a Superior Hard Carbon Microsphere Anode for Sodium-Ion Batteries. ACS Appl. Energy Mater. 2020, 3 (10), 10045–10052. https://doi.org/10.1021/acsaem.0c01750.

(3) Xu, K. Electrolytes and Interphases in Li-Ion Batteries and Beyond. Chem. Rev. 2014, 114 (23), 11503–11618. https://doi.org/10.1021/cr500003w.

(4) Subramanyan, K.; Lee, Y. S.; Aravindan, V. Impact of Carbonate-Based Electrolytes on the Electrochemical Activity of Carbon-Coated Na₃V₂(PO₄)₂F₃ Cathode in Full-Cell Assembly with Hard Carbon Anode. Journal of Colloid and Interface Science. 2021, pp 51–59. https://doi.org/10.1016/j.jcis.2020.08.043.

Lithium-Ion Battery Technologies for Electric Mobility – State-of-the-Art Scenario

2022-05-25T20:28:00.003+05:30

ARAI Journal of Mobility Technology; Accepted Date: May 13, 2021

Perspectives

DOI: https://doi.org/10.37285/ajmt.1.2.10

Author(s): Nagmani, Debanjana Pahari, Ashwani Tyagi, Sreeraj Puravankara

Abstract:

Rechargeable batteries are an integral part of all types of electric vehicles (EVs). Batteries must contain higher energy-power densities and longer cycle life to qualify for an EV system. Lead-acid batteries, Nickel-metal hydride batteries, and Lithium-ion batteries (LIBs) have been employed as charge storage in EV systems to date. Lead-acid batteries and Nickel-metal hydride batteries were deployed in EVs by General Motors in 1996. However, the low specific energy in Lead-acid batteries (34 Whkg^-1) and high self-discharge (12.5% per day at r.t.) in Nickel-metal hydride batteries have marked these batteries obsolete in EV applications. LIBs currently occupy most of the EV market because of their high specific power (~130-220 Whkg^-1) and a low self-discharge rate (~5% per month). The current technological maturity and mass production in LIBs have reduced the overall battery cost by ~98% in the last three decades, reaching an average value of $140 kWh^-1in 2021. Although a game-changer in battery technologies, LIBs encounter various challenges: high cost, low safety, less reliability, and immature infrastructure despite its environmental benignness. Overcharging and overheating of LIBs can cause thermal runway leading to fire hazards or explosion. Declining Li-resources also raise concerns regarding the reliability and shelf-life of LIB technology. Hence, a critical assessment of Li-ion chemistries is essential to comprehend the potential of LIBs in electric mobilities and to realize the prospects in EVs.

Opportunities in Na/K [Hexacyanoferrate] Frameworks for Sustainable Non-aqueous Na+/K+ batteries

2021-12-09T19:37:00.007+05:30

Sustainable Energy & Fuels (Royal Society of Chemistry), (IF 6.813), Accepted Date: December 03, 2021

Review Article

DOI: https://doi.org/10.1039/D1SE01653A

Author(s): Ashwani Tyagi, Nagmani, Sreeraj Puravankara.

Abstract:

In the past decade, the most sought cathode materials for SIBs and PIBs include transition metal oxides (TMOs), polyanionic phosphates and fluoro phosphates, NASICON-type polyanionic compounds, and alkali metal hexacyanoferrates (AMHCFs/PBAs). From the commercialization perspective, Novasis Energies, Inc. and Faradion Ltd. have successfully used AMHCFs and TMOs as cathode materials, respectively, for large-scale energy storage in sodium-ion batteries (SIBs). The open framework voids (~ 3.4 Å) in AMHCFs are ideal for the larger K+/Na+ ion insertion in PIBs and SIBs. Lower cost/performance ratio due to cheaper raw materials and sustainability due to Coloumbically efficient cycling stability make AMHCFs ideal cathode materials for sustainable future batteries. In the window of the commercial prospects, we review the AMHCFs as cathode materials for both SIBs and PIBs with the focus on optimizing AMHCF cathodes through morphology control, reducing the [Fe(CN)6] vacancies, minimizing the interstitial water, while maintaining a high crystallinity and Na+/K+ content in the AMHCFs to enhance the electrochemical performance. Surface engineering, gradient compounds, graphene-based composites, and multiple cation substitutions can create efficient Na+/K+ ion diffusion pathways. The storage mechanisms and optimizing the electrolyte systems in AMHCFs are critical for efficient Na+/K+ ion batteries for stationary storage.

Read online @ https://doi.org/10.1039/D1SE01653A

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Insights into the Diverse Precursor based Micro-Spherical Hard Carbons as Anode material for Sodium-ion and Potassium-ion Batteries

2021-12-07T13:20:00.012+05:30

Material Advances (Royal Society of Chemistry); Accepted Date: December 02, 2021

Review Article

DOI: https://doi.org/10.1039/D1MA00731A

Author(s): Nagmani, Ashwani Tyagi, Sreeraj Puravankara

Abstract:

The growing renewable energy sector worldwide and the depleting resources for the Li-ion battery (LIB) technology in a decade push the case of complementary storage technologies, especially for stationary energy storage. Sodium-ion batteries (SIB) are on the verge of large-scale commercialization, and potassium-ion battery (PIB) technology is a relative newcomer in the field of future storage technologies. Suitable, low-cost, environmentally benign commercial electrode materials are the most researched battery systems in this context. Like LIBs, carbonaceous materials can potentially be the first commercial anode material for sodium-ion and potassium-ion batteries. Micro-Spherical hard carbons (MSHCs) have the added advantage of higher packing density and low surface area to volume ratio with good structural stability. The metal-ion storage capacity is critically dependent on morphology, surface area, surface defects, degree of graphitization, and porosity. The review addresses the influence of diverse precursors and synthesis conditions on micro-spherical hard carbons' electrochemical storage, focusing on storage-capacity and storage-mechanism correlation and the precursors' structural influence in designing anodes for sustainable, green, and safe SIBs and PIBs.

Read Online at: https://doi.org/10.1039/D1MA00731A

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Navomesh Stavya: An Innovation Start-up Company from Bihar (India) for E-Mobility

2021-12-03T18:26:00.005+05:30

Navomesh Stavya is new generation innovation company from Bihar to collaborate digitally among people and companies with the help of technology.

NS interested in building an innovative ecosystem to work together and to bring innovative mindset and culture for the future. The services offered by NS are VAYUU- Air Purifier, ETM and Research Services. ETM is e-mobility based startup committed to debut the electric vehicle revolution in India. With the smart mobility solutions, NC can enable India's evolution towards a sustainable mobility system. This company is led by Mr. Ravi Shekhar (Founder), Mr. Kartikesh Kumar Jha (Co-founder and Head of R&D), and Ms. Neha Sharma (Co-founder).

To know more about company, Click Here

The production costs of lithium-ion batteries have fallen by 97% since 1991

2021-11-27T23:52:00.001+05:30

According to MIT, the LIBs are now 97% cheaper since 1991.

More info... coming soon

Source:

1. Determinants of lithium-ion battery technology cost decline. https://pubs.rsc.org/en/content/articlelanding/2021/EE/D1EE01313K

2. https://www.pv-magazine.com/2021/11/26/behind-the-price-drops-in-lithium-ion-batteries/

The Future of mobility is Electric (e-Mobility) for sustainable eco-system: Sodium-Ion Battery ( A Technology Beyond Lithium-Ion Battery)

2021-06-17T11:21:00.026+05:30

Introduction to electric mobility – Battery on wheels

Electric mobility in the 21^st century

Nagmani

Transportation and vehicular mobility have been significant aspects of modern civilization, ensuring connectivity and facilitating socio-economical development. The majority of automobiles on the road today run with conventional fossil fuels like gasoline and diesel. In an Internal Combustion Engine (ICE), incomplete combustion results in greenhouse gas (GHG) emissions contributing to 25% of the total GHG emissions worldwide. As the global consensus grew, green and sustainable alternatives emerged towards the electrification of transportation sectors worldwide. However, electric vehicles (EVs) are historically older technologies as compared to ICE-based automobiles.¹ Battery-powered cars first appeared in the early 1800s, followed by electrified locomotives in the 1830s.² Patents were granted in England and America in 1840 and 1847 to use electrified rails.³ Almost a decade later, Gaston Plante invented rechargeable lead-acid batteries in 1859,⁴ making battery-operated vehicles viable. However, the limitations of a naïve technology, and the people's obsession for "powerful machines," and the lack of an appreciable range of EV vehicles with low energy density rechargeable batteries made the technology obsolete.⁵

Due to the limited energy/power storage and low driving range, battery-operated vehicles had never gained popularity in the 19^th century and were replaced by gasoline-fueled engines in the early 1900s. ICE as the power generator dominated the automobile market till the 1970s. The petroleum embargo in the 1970s resulted in a rapid increase in fuel cost,^{6, 7} forcing the world into more sustainable and green solutions for mobility. The global consensus about the depletion of fossil fuel resources and global warming (0.4°C from 1970 to 1984) due to GHG emissions has fueled the revival of electric automobiles. In 1996, rechargeable Lead-acid batteries (PbA) and Nickel-metal hydride (NiMH) batteries were deployed in EVs by General Motors.^{8, 9, 10} Compared to ICE-based vehicles, the low-range EVs failed to spark consumer confidence, and the battery-powered EVs remained more as future prototype vehicles.

The development of rechargeable Li-ion batteries in the 1990s (LIBs) has led to a battery revolution in consumer electronics. Since then, the evolution of LIBs as sustainable solutions as EV batteries has reduced the usage of existing rechargeable PbA and NiMH batteries due to their higher energy density (~130-220 Whkg^-1) and shallow self-discharge rate (~5% per month). LIBs provide the best choice in terms of energy and power densities, flexibility, and compact cell designs. R&D and mass production of LIBs has reduced the total cell cost by ~98% in the last three decades, reaching an average value of $140 (kWh)^-1in 2021¹¹. However, LIBs encounter a few challenges due to the limited abundance of lithium sources and the inadequate infrastructure for widespread EV applications. Cell safety and less service reliability of LIBs impede the growth of EVs. New-edge LIB technologies involving cheaper, safer, and sustainable materials have gathered enough attention in the EV market to eliminate these barriers.

Onori, S.; Serrao, L.; Rizzoni, G. Hybrid Electric Vehicles: Energy Management Strategies; Springer: Berlin/Heidelberg, Germany, 2016. https://doi.org/10.1007/978-1-4471-6781-5.
Morimota, M. Which is the First Electric Vehicle? Electrical Engineering in Japan. 192 (2), 31-38, 2015. https://doi.org/10.1002/eej.22550.
White, John H. A History of the American Locomotive: Its Development, pp.1830-1880. North Chelmsford, MA: Courier. p. 14. 1979. ISBN 9780486238180.
May, G. J., Davidson, A., Monahov, B. Lead batteries for utility energy storage: A review. J. Energy Storage, 15, 145-157, 2018. https://doi.org/10.1016/j.est.2017.11.008.
Prengaman, R. D., Mirza, A. H. Recycling concepts for lead-acid batteries. Lead-Acid Batteries for Future Automobiles, 578-598, 2017. https://doi.org/10.1016/B978-0-444-63700-0.00020-9.
Shafiee, S., Topal, E. A long-term view of worldwide fossil fuel prices. Appl. Energy, 87(3), 988-1000, 2010. https://doi.org/10.1016/j.apenergy.2009.09.012.
Baffes, J., Kose, M. A., Ohnsorge, F., Stocker, M. The Great Plunge in Oil Prices: Causes, Consequences, and Policy Responses. World Bank group, Policy Research Note, PRN/15/01, 2015. http://hdl.handle.net/10986/23611.
Chian, T. Y., Wei, W. L. J., Le, E. L. Ze., Ren, L. Z., Ping, Y. E., Bakar, N. Z. A., Faizal, M., Shivkumar, S. A Review on Recent Progress of Batteries for Electric Vehicles. Int. J. Appl. Eng. Res., 14, 4441-4461, 2019. http://www.ripublication.com.
Chan, C. C. The state of the art of electric and hybrid vehicles. Proceedings of the IEEE, 90(2), 247-275, 2002. https://doi.org/10.1109/5.989873.
Gifford, P., Adams, J., Corrigan, D., Venkatesan, S. Development of advanced nickel/metal hydride batteries for electric and hybrid vehicles. J. Power Sources, 80(1-2), 157-163, 1999. https://doi.org/10.1016/S0378-7753(99)00070-1.
Micah, S. Z., Juhyun, S., and Jessika, E. T. Determinants of lithium-ion battery technology cost decline. Energy Environ. Sci., 14, 6074-6098, 2021. https://doi.org/10.1039/D1EE01313K.

Highly sensitive and selective H2S gas sensor based on TiO2 thin films

2021-02-17T23:38:00.007+05:30

Applied Surface Science ( IF 7.392 ); Publication Date: February 9, 2021

DOI: https://doi.org/10.1016/j.apsusc.2021.149281

Author(s): Nagmani, D. Pravarthana, A Tyagi, T.C Jagadale, W. Prellier, D.K Aswal

Abstract:

Hydrogen Sulfide (H2S) gas sensors with very high sensitivity, selectivity, and quick responses are highly demanding for practical industrial applications. However, achieving it remains a challenging due to high-cost fabrication, poor selectivity, and stability of existing sensor materials. In this work, we report the nanocrystalline TiO2 thin film based highly selective H2S sensor on a silicon substrate, which exhibits superior sensor response of ∼ 112000 % and ∼ 85 % at 50 ppm and 100 ppb concentration of H2S gas, respectively when operated at 100 ℃. Also, it exhibits quick response time (∼ 48 s) and fast recovery time (5 min) with long term stability in H2S gas sensing. The sensitivity of H2S gas on the TiO2 film is related to its surface roughness and excessive chemisorbed oxygen on the surface of the film. Thus, it was found that TiO2 thin film with appropriate roughness and defects plays a significant role in achieving a much better H2S selectivity and sensitivity properties at lower ppm detection for the H2S gas sensor.

Read online at : https://doi.org/10.1016/j.apsusc.2021.149281

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Insights into the Plateau Capacity Dependence on the Rate Performance and Cycling Stability of a Superior Hard Carbon Microsphere Anode for Sodium-Ion Batteries

2020-09-29T13:40:00.013+05:30

ACS Applied Energy Materials (IF 6.959) Publication Date: September 8, 2020

DOI: https://doi.org/10.1021/acsaem.0c01750

Author(s): Nagmani (IIT Kharagpur); Sreeraj Puravankara (IIT Kharagpur)

The sodium-ion storage mechanism of the hard carbon microspheres (HCMSs) synthesized using the microwave technique from the sucrose precursor and a 50% DEG/H2O solvent mixture carbonized at 1000 °C (50DEG-HCMS) is studied. The superior sodium-ion battery (SIB) anode, 50DEG-HCMS delivers the highest reversible capacities of 385 (ICE ∼75.5%) and 265 mAh g–1 (ICE ∼72%) at current densities of 30 and 300 mA g–1, respectively. The plateau related capacity (PRC) solely determines the reversible capacity fade on cycling at all C-rates for the HCMS, validating the insertion/pore-filling mechanism for the low voltage (< ∼0.1 V) capacity. In this study, we substantiate that maximizing PRC may not be the best strategy in designing a high rate, a highly cyclable carbon-based anode for SIBs. HCMSs synthesized using a 20% DEG/H2O solvent mixture and at different carbonization temperatures are also studied to assert the defect/vacancy-assisted adsorption/insertion and insertion/micropore filling Na-ion storage mechanism in hard carbons.

Read online @ https://doi.org/10.1021/acsaem.0c01750

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Energy Storage @ School of Energy Science and Engineering, IIT Kharagpur

2020-08-31T14:47:00.005+05:30

Lithium-ion batteries (LIBs) have become dominant over all battery technology for portable and large-scale electric energy storage since their commercialization in 1991. The world has geared up for e-mobility for transportation and renewable energy storage for power production, where large-scale stationary storage devices have become irrelevant.^1,2 The continuous consumption of limited reserve lithium for large-scale applications has raised the cost of LIBs over six times in the last decade.³

Sodium-ion batteries (SIBs) stand out as an alternative to LIBs due to better raw material distribution, less toxic, less expansive, and similar electrochemistry. As for the SIB system, Na-ions move between the anode and cathode through either an aqueous, non-aqueous or solid-state electrolyte in a rocking chair fashion during the process of charge/discharge. The promising cathode material for SIBs is layered oxide, polyanionic compound, and Prussian blue analogs-based compounds, whereas hard carbon (H.C.) is used as anode materials due to low-cost fabrication, abundance, and tunable electronic and structural properties.^4,5 Apart from electrode materials difference in SIBs, another significant change is the use of the current collector. In LIBs, aluminum (Al) foil is used as a current collector for the cathode, and copper (Cu) foil must be for the anode because Li forms an alloy with Al metal at lower potentials, and a porous separator with the electrolyte solution is placed in between the two electrodes to prevent short circuit.⁶ SIBs follow a similar architecture instead with the possibility of using Al foil as the current collector for the anode since Na does not form alloy at a lower potential.

The material replacement of lithium with sodium and copper by aluminum could lower the cost of SIBs but increase the mass and volume of the overall battery system compared with LIBs. Cost-effectiveness ($/kWh) plays a crucial role in designing a battery for commercial success in end-user applications. The cost analysis of SIBs is primarily up to active materials combinations at the cell, module, and pack levels. Although, the direct comparison of SIBs and LIBs is not feasible in terms of cost-effectiveness because SIBs are not fabricated or manufactured on an equivalent scale to LIBs. The published review article in the Journal of Energy Storage will summarize the existing battery technologies and the recent progress for emerging SIBs in the cathode, anode, aqueous, non-aqueous, and solid-state electrolyte systems. It provides cost analysis and insights into how SIBs are commercially viable with low cost and high performance. Finally, an overview is presented on the state-of-the-art SIBs to know existing challenges, future opportunities, and directions for commercialization.

The figure illustrates the chemistry and energy densities of commercialized SIBs

More information: Click Here

References:

(1) Zhang, H.; Liu, X.; Li, H.; Hasa, I.; Passerini, S. Challenges, and Strategies for High-Energy Aqueous Electrolyte Rechargeable Batteries. Angew. Chemie - Int. Ed. 2021, 60 (2), 598–616. https://doi.org/10.1002/anie.202004433.

(2) Pasta, M.; Wessells, C. D.; Liu, N.; Nelson, J.; McDowell, M. T.; Huggins, R. A.; Toney, M. F.; Cui, Y. Full Open-Framework Batteries for Stationary Energy Storage. Nat. Commun. 2014, 5, 1–9. https://doi.org/10.1038/ncomms4007.

(3) Greim, P.; Solomon, A. A.; Breyer, C. Assessment of Lithium Criticality in the Global Energy Transition and Addressing Policy Gaps in Transportation. Nat. Commun. 2020, 11 (2020), 1–11. https://doi.org/10.1038/s41467-020-18402-y.

(4) Muñoz-Márquez, M. Á.; Saurel, D.; Gómez-Cámer, J. L.; Casas-Cabanas, M.; Castillo-Martínez, E.; Rojo, T. Na-Ion Batteries for Large Scale Applications: A Review on Anode Materials and Solid Electrolyte Interphase Formation. Adv. Energy Mater. 2017, 7 (20). https://doi.org/10.1002/aenm.201700463.

(5) Palomares, V.; Casas-Cabanas, M.; Castillo-Martínez, E.; Han, M. H.; Rojo, T. Update on Na-Based Battery Materials. A Growing Research Path. Energy Environ. Sci. 2013, 6 (8), 2312–2337. https://doi.org/10.1039/c3ee41031e.

(6) Myung, S. T.; Yashiro, H. Electrochemical Stability of Aluminum Current Collector in Alkyl Carbonate Electrolytes Containing Lithium Bis(Pentafluoroethylsulfonyl)Imide for Lithium-Ion Batteries. J. Power Sources 2014, pp 167–173. https://doi.org/10.1016/j.jpowsour.2014.07.097.

Academic Profile of Nagmani

2020-08-31T13:41:00.048+05:30

Nagmani

Dr Nagmani earned his doctorate on "Diverse Precursor Based Hard Carbon Anode for Sodium-ion and Potassium-ion Batteries" at the Indian Institute of Technology Kharagpur under the supervision of Professor Dr Sreeraj Puravankara

Currently, he is working as a Project Scientist at the Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur. Earlier he worked at the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad as a Postdoctoral Research Associate to scale up sodium-ion and lithium-ion batteries.

Fellowship/Award Records:

1. Science and Engineering Research Board (SERB), Government of India, International Travel Award for The Electrochemical Society Meeting, October 8-12, 2023, Gothenburg, Sweden.

2. MHRD Fellowship (2018-2022) for Ph.D. at IIT Kharagpur (QS Ranking-271): Joined

3. Indian Academy of Sciences, Summer Research fellowship (2014).

4. Chinese Government Scholarship for Ph.D. at Tsinghua University (QS Ranking-17): Offered but not joined due to Covid Pandemic:

Education background:

1. Ph.D. (Diverse Precursor Based Hard Carbon Anode for Sodium-ion Batteries and Potassium-ion Batteries) from Indian Institute of Technology Kharagpur, West Bengal (2018-2024).

2. Integrated five-year Master of Technology (B.Tech + M.Tech) in Energy Engineering from Central University of Jharkhand Ranchi, Jharkhand (Gold Medalist: 2011-2016).

3. Schooling from Kendriya Vidyalaya Muzaffarpur (2011).

Working Experience:

1. Project Scientist at Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur from August 2024.

2. Postdoctoral Research Associate at Centre for Nanomaterials, International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad from July 2023 to July 2024.

3. Assistant Professor (on a contract basis) at the Department of Energy Engineering, Central University of Jharkhand Ranchi, Jharkhand from July 2016 to Dec 2017.

4. Project Trainee at Technical Physics Division, Thin Film Devices Section, Bhabha Atomic Research Centre Mumbai, Maharashtra from June 2015 to May 2016.

Scientific Records (Peer-Reviewed International Journal):

1. Nagmani, S. Puravankara. Insights into the plateau capacity dependence on the rate performance and cycling stability of a Superior Hard Carbon Micro Sphere anode for Sodium-Ion Batteries. ACS Appl. Energy Mater. 2020, 3, 10, 10045–10052.

2. Nagmani, D. Pravarthana, A Tyagi, T.C Jagadale, W. Prellier, D.K Aswal. Highly sensitive and selective H2S gas sensor based on TiO2 thin films. Appl. Surf. Sci. 2021, 549, 149281.

3. Nagmani, P. Verma, and S. Puravankara, Jute-Fiber Precursor-Derived Low-Cost Sustainable Hard Carbon with Varying Micro/Mesoporosity and Distinct Storage Mechanisms for Sodium-Ion and Potassium-Ion Batteries. Langmuir 2022, 38, 50, 15703–15713.

4. Nagmani, A. Tyagi, S. Puravankara. Insights into the diverse precursor-based micro-spherical hard carbons as anode materials for sodium–ion, and potassium–ion batteries. Mater. Adv., 2022, 3, 810-836.

5. A. Tyagi, Nagmani, S. Puravankara. Opportunities in Na/K [hexacyanoferrate] frameworks for sustainable non-aqueous Na+/K+ batteries. Sustainable Energy Fuels, 2022, 6, 550-595.

6. Nagmani, A. Kumar, Sreeraj Puravankara. Optimizing ultramicroporous hard carbon spheres in carbonate ester-based electrolytes for enhanced sodium storage in half-/full-cell sodium-ion batteries. Battery Energy, 2022, 1(3), 2022007.

7. Nagmani, D. Pahari, P. Verma, S. Puravankara. Are Na-ion batteries nearing the energy storage tipping point?–Current status of non-aqueous, aqueous, and solid-state Na-ion battery technologies for sustainable energy storage. Journal of Energy Storage, 2022, 56, 105961.

8. Nagmani, D. Pahari, A. Tyagi, S. Puravankara. Lithium-Ion Battery Technologies for Electric Mobility – State-of-the-Art Scenario. ARAI Journal of Mobility Technology, 2022, 2(2), 233–248.

9. A. Kumar, Nagmani, S. Puravankara. Symmetric Sodium-ion Batteries – Materials, Mechanisms, and Prospects. Materials Today Energy, 2022, 101115.

10. Nagmani, B. K. Satpathy, A. K. Singh, D. Pradhan, S. Puravankara. Utilization of Single Biomass-derived Micro-Mesoporous Carbon for Dual-Carbon Symmetric and Hybrid Sodium-ion Capacitors. New J. Chem. 2023, 47, 12658-12669.

11. Nagmani, Prakhar Verma and Sreeraj Puravankara, Effect of Pore Morphology on the Enhanced Potassium Storage in Hard Carbon Derived from Polyvinyl Chloride for K-ion Batteries. Electrochim. Acta, 2023, 464, 142903.

12. Nagmani and Sreeraj Puravankara. Utilization of PET-derived Hard Carbon as a battery-type, higher plateau capacity Anode for Sodium-ion and Potassium-ion Batteries. Journal of Electroanalytical Chemistry, 2023, 946, 117731.

13. Nagmani, D. Das and Sreeraj Puravankara. Role of Cyclopentyl methyl ether co-solvent in Improving SEI layer stability in Hard Carbon Anode for Sodium-ion Batteries. Submitted to Journal of Power Sources. Preprint available at ChemRxiv.

14. Nagmani, Sanchita Manna and Sreeraj Puravankara. Understanding of Storage Mechanism for High Capacity Micro-Spherical Hard Carbon Anode for Lithium, Sodium, and Potassium-ion Batteries: An Electrochemistry and Characterization Point of View. (under preparation)

15. B. K. Satpathy, Nagmani, A. K. Singh, D. Pradhan, S. Puravankara. Bayleaf-derived carbonaceous material: A potential electrode for sodium-ion batteries and supercapacitor applications. (under preparation)

Scientific Meetings (Symposium/Conference/Webinar):

1. 244th ECS Meeting, Gothenburg, Sweden, October 8-12, 2023. (Oral Presentation).

2. National Symposium on Electrochemical Science and Technology (NSEST), ARCI, Hyderabad, August 17-18, 2023. (Oral Presentation).

3. 2022 MRS Spring Meeting and Exhibit, Honolulu, Hawai'i, May 8-13 and May 23-25, 2022 (Virtual). (Oral and Poster Presentation).

4. National Conference on Energy Technology 2022 by IIT Madras, INAE Chennai, and ARCI Chennai/Hyderabad. (Oral Presentation).

5. The International Conference on Beyond Fossil Fuels: The Future of Alternative Energy Technologies 2022, IIT (BHU) Varanasi. (Oral Presentation).

6. 60th Solid State Physics Symposium 2015 by Department of Atomic Energy, India at Amity University, Noida. (Poster Presentation)

7. 2nd Global Energy Technology Summits 2015 by National Thermal Power Corporation, New Delhi, India, 2016. (Oral Presentation)

8. Novel Electrochemical Energy Devices for Storage (NEEDS-2020)” an International Webinar Series held from 17/08/2020 to 19/08/2020 organized by the Department of Analytical Chemistry & Department of Energy, University of Madras, Guindy Campus, Chennai, Department of Chemistry, Indian Institute of Technology- Madras & Abinnovus Consulting Private Limited-India.

9. Hands-on Training on Nanofabrications 2017, by Indian Nanoelectronics User Program (INUP) at Centre for Nano Science and Technology, Indian Institute of Science Bangalore, Karnataka, India.

Institute/Organization Affiliation:

Other Activity Achievements:

1. National School Chess player: Played at the School Games Federation of India (SGFI) level (2010-2011)

2. Consecutive five-time chess champion at Kendriya Vidyalaya Sangathan (KVS) state level (2006-2010) and played at KVS National level [6th rank (2006) & 5th rank (2010)].

3. First rank in the under-17 and second rank in an under-19 district chess tournament.

4. Won Bronze Medal at IIT Kharagpur Interhall Cricket Championship 2020.

Languages Known:

English, Hindi, and German

Contact:

Email: nagmani.iitkgp@gmail.com; nagmani12345@gmail.com

Mobile: +919709584593; +918210566119

Twitter: @NAGMANI20

Skype: nagmani12345

Linkedin: https://www.linkedin.com/in/nagmani-88863060

Dr. Nagmani

The Carbon That Could: Powering India's Clean Energy Dreams

Advanced Characterization Techniques for Insights into the Sodium Storage Mechanism of Hard Carbon Anodes: Recent Advances and Future Perspectives

Breakthrough in Sodium-Ion Battery Technology: Unmodified Hard Carbon Anode with High Capacity of 422 mAh/g and Energy Density Unveiled

Nagmani received International Travel Award from Science and Engineering Research Board, Government of India to present his scientific work at the Prestigious Electrochemical Society Meeting, Gothenburg Sweden.

Utilization of PET derived hard carbon as a battery-type, higher plateau capacity anode for sodium-ion and potassium-ion batteries

Abstract

Effect of pore morphology on the enhanced potassium storage in hard carbon derived from polyvinyl chloride for K-ion batteries

Abstract

Utilization of Single Biomass-derived Micro-Mesoporous Carbon for Dual-Carbon Symmetric and Hybrid Sodium-ion Capacitors

Abstract

Low-cost and sustainable micro/mesoporous hard carbon derived from Jute-waste for promising high-performance Sodium and Potassium-ion batteries with distinct storage mechanism

Abstract

Are Na-ion batteries nearing the energy storage tipping point? – Current status of non-aqueous, aqueous, and solid-sate Na-ion battery technologies for sustainable energy storage

Abstract

Gallery Section

Optimizing ultramicroporous hard carbon spheres in carbonate ester-based electrolytes for enhanced sodium storage in half-/full-cell sodium-ion batteries

Enhanced Performance of Ultra-Microporous Hard Carbon Spheres as Anode in Half /Full Cells for Sodium-ion Batteries through Optimized Carbonate Ester Electrolytes

Lithium-Ion Battery Technologies for Electric Mobility – State-of-the-Art Scenario

Opportunities in Na/K [Hexacyanoferrate] Frameworks for Sustainable Non-aqueous Na+/K+ batteries

Abstract:

Insights into the Diverse Precursor based Micro-Spherical Hard Carbons as Anode material for Sodium-ion and Potassium-ion Batteries

Navomesh Stavya: An Innovation Start-up Company from Bihar (India) for E-Mobility

Navomesh Stavya is new generation innovation company from Bihar to collaborate digitally among people and companies with the help of technology.

The production costs of lithium-ion batteries have fallen by 97% since 1991

The Future of mobility is Electric (e-Mobility) for sustainable eco-system: Sodium-Ion Battery ( A Technology Beyond Lithium-Ion Battery)

Introduction to electric mobility – Battery on wheels

Electric mobility in the 21st century

Highly sensitive and selective H2S gas sensor based on TiO2 thin films

Abstract:

Insights into the Plateau Capacity Dependence on the Rate Performance and Cycling Stability of a Superior Hard Carbon Microsphere Anode for Sodium-Ion Batteries

Energy Storage @ School of Energy Science and Engineering, IIT Kharagpur

Academic Profile of Nagmani

Contact:

Electric mobility in the 21^st century