A5057144962- Electrocatalysts for Energy Conversion
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Fuel Cells and Related Materials
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Ferroelectric and Piezoelectric Materials
- Advanced battery technologies research
- Metallic Glasses and Amorphous Alloys
- Multiferroics and related materials
- Copper-based nanomaterials and applications
- Magnetism in coordination complexes
- Organometallic Compounds Synthesis and Characterization
- Ammonia Synthesis and Nitrogen Reduction
- Metal complexes synthesis and properties
- Magnetic and transport properties of perovskites and related materials
- Inorganic Chemistry and Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Thermal Expansion and Ionic Conductivity
- Semiconductor materials and interfaces
- Synthesis and properties of polymers
- nanoparticles nucleation surface interactions
- Metallurgical and Alloy Processes
- Enhanced Oil Recovery Techniques
University of Malaya
2023-2024
University of Calgary
2022-2024
West Bengal State University
2015-2024
Institute of Nano Science and Technology
2019-2023
Indian Institute of Science Education and Research Mohali
2019-2022
North Bengal University
2020-2022
National Institute of Technology Kurukshetra
2020-2021
India Habitat Centre
2019
University of Hyderabad
2000-2004
Jadavpur University
1997
An effective modulation of the active sites in a bifunctional electrocatalyst is essentially desired, and it challenge to outperform state-of-the-art catalysts toward oxygen electrocatalysis. Herein, we report development having target-specific Fe-N4/C Co-N4/C isolated sites, exhibiting symbiotic effect on overall electrocatalysis performances. The dualism N-dopants binary metals lower d-band centers both Fe Co Fe,Co,N-C catalyst, improving overpotential electrocatalytic processes (ΔEORR-OER...
All-solid-state lithium batteries (ASSLBs) are considered promising next-generation energy storage devices due to their safety and high volumetric densities. However, achieving the key U.S. DOE milestone of a power density 33 kW L–1 appears be significant hurdle in current ASSLBs. One main reasons is that advancements solid electrolyte (SE) conductivity have been prioritized over critical (CCD) when employing an elemental Li anode. Several aspects electrode- SE interface-based difficulties...
Interconnected conducting porous graphene as supercapacitive material well current collector for integrated metal-free microsupercapacitor (MSC) having ultra-long cycle life and outstanding capacitive performance.
Abstract The hybrid solid‐liquid electrolyte concept is one of the best approaches for counteracting interface problems between solid electrolytes and Li anodes/cathodes. However, a layer forming at interfaces degrades battery capacity power during longer cycle due to highly reactive chemical electrochemical reactions. To solve this problem in present study, synthetic approach demonstrated by combining AlCl 3 Lewis acid fluoroethylene carbonate as additives conventional LiPF 6 ‐containing...
Transition-metal atoms and/or heteroatom-doped carbon nanostructures is a crucial alternative to find nonprecious metal catalyst for electrocatalytic oxygen reduction reaction (ORR). Herein, the first time, we demonstrated formation of binary (Fe-Mn) active sites in hierarchically porous nanostructure composed Fe, Mn, and N-doped fish gill derived (Fe,Mn,N-FGC). The Fe,Mn,N-FGC shows remarkable ORR performance with onset potential (Eonset) 1.03 V half-wave (E1/2) 0.89 V, slightly better than...
The rational design of electronically tuned transition-metal-doped conductive carbon nanostructures has emerged as a potential substitution platinum-group-metal (PGM)-free electrocatalyst for oxygen reduction reaction (ORR). We report here universal strategy using one-step thermal polymerization graphitic nitride (g-C3N4) without any support highly efficient ORR electrocatalyst. X-ray absorption spectroscopy evidences the presence Fe-Nx active sites with possible three-coordinated Fe atom N...
This study introduces a sustainable approach to designing organic cathode materials (OCMs) for lithium-ion batteries as potential replacement traditional metal-based electrodes. Utilizing green synthetic methodologies, we synthesized and characterized five distinct quinone derivatives investigated their electrochemical attributes within Li-ion battery architectures. Notably, the observed specific capacities were lower than theoretical predictions, suggesting limitations in achieving...
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A universal approach for improving the cycling stability of pseudocapacitors is demonstrated<italic>via</italic>combined covalent and non-covalent conjugation chemistry followed by unique<italic>in situ</italic>electropolymerization an organic–inorganic hybrid xerogel material.
Solid (ceramic) electrolytes have demonstrated great potential for all-solid-state lithium metal batteries (ASSLMBs), providing better safety and stability over organic liquid electrolyte-based Li-ion batteries. A proper selection of solid an analysis their compatibility with Li are critical improving battery performance. Here, we present extensive experimental study realizing the effect substituting alkaline-earth-metal-doped Li7La2.75A0.25Zr1.75M0.25O12 (A = Ca, Sr, Ba; M Nb, Ta)...
Improvements in highly efficient precious-metal-free electrocatalysts for the oxygen reduction reaction (ORR) are extremely important but still a significant challenge. Herein, we report novel catalyst design strategy integrating bis(terpyridine) (hexadentate chelating ligand) with Fe which acts as nitrogen, self-supporting carbon source, and potent metal–ligand active site binding structure (Fe-btpy) promotes formation of Fe-Nx/C sites, bypassing complications induced during Fe-N-C...
Toward the realm of sustainable energy, development efficient methods to enhance performance electrocatalysts with molecular level perception has gained immense attention. Inspite untiring attempts, production cost and scaling-up issues have been a step back toward commercialization electrocatalysts. Herein, we report one-pot electrophoretic exfoliation technique minimum time power input synthesize iron phthalocyanine functionalized high-quality graphene sheets (G-FePc). The π-stacked...
Abstract The design and synthesis of metal‐free catalysts with superior electrocatalytic activity, high durability, low cost, under mild conditions is extremely desirable but remains challenging. To address this problem, a polymer‐assisted electrochemical exfoliation technique graphite in the presence an aqueous acidic medium reported. This simple, cost‐effective, mass‐scale production approach could open possibility for high‐quality nitrogen‐doped graphene–polypyrrole (NG‐PPy). NG‐PPy...
Ultrastable electrode materials for spontaneous fuel production by electrochemical water splitting have received tremendous amounts of attention, because the conventional electrolysis system is not fully renewable as it needs power from nonrenewable sources. The design a self-supportive and ultradurable electrocatalyst that budget-friendly obtained via less time-consuming method therefore extremely necessary to split into hydrogen oxygen. It important divulge structural information catalyst...
Engineering catalytically active sites have been a challenge so far and often relies on optimization of synthesis routes, which can at most provide quantitative enhancement facets, however, cannot control over choosing orientation, geometry spatial distribution the sites. Artificially sculpting via laser-etching technique new prospect in this field offer species nanocatalyst for achieving superior selectivity attaining maximum yield absolute defining their location every site nanoscale...