A5081743453- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Advanced battery technologies research
- Advanced Battery Technologies Research
- Electrocatalysts for Energy Conversion
- Electron and X-Ray Spectroscopy Techniques
- TiO2 Photocatalysis and Solar Cells
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- X-ray Spectroscopy and Fluorescence Analysis
- Extraction and Separation Processes
- Transition Metal Oxide Nanomaterials
- Nanoplatforms for cancer theranostics
- Graphene and Nanomaterials Applications
- Copper-based nanomaterials and applications
- Supramolecular Self-Assembly in Materials
- ZnO doping and properties
- Antifungal resistance and susceptibility
- Seed Germination and Physiology
- Advanced Nanomaterials in Catalysis
- Magnetic and Electromagnetic Effects
- Catalytic Processes in Materials Science
- Electrohydrodynamics and Fluid Dynamics
- Thermal Expansion and Ionic Conductivity
University of Oxford
2022-2024
The Faraday Institution
2024
Chonnam National University
2018-2023
Savitribai Phule Pune University
2016-2020
MTO nanodiscs synthesized using the hydrothermal approach were explored for photocatalytic removal of methylene blue (MB), rhodamine B (RhB), congo red (CR), and methyl orange (MO). The disc-like structures ~16 nm thick ~291 average diameter stoichiometric rhombohedral in nature. delivered stable recyclable activity under Xe lamp irradiation. kinetic studies showed 89.7, 80.4, 79.4, 79.4 % degradation MB, RhB, MO, CR at rate constants 0.011(±0.001), 0.006(±0.001), 0.007(±0.0007), 0.009 (±0.0001) min
The cathode–electrolyte interphase (CEI) in Li-ion batteries plays a key role suppressing undesired side reactions while facilitating transport. Ni-rich layered cathode materials offer improved energy densities, but their high interfacial reactivities can negatively impact the cycle life and rate performance. Here we investigate of electrolyte salt concentration, specifically LiPF6 (0.5–5 m), altering reactivity charged LiN0.8Mn0.1Co0.1O2 (NMC811) cathodes standard carbonate-based...
Ni-rich layered oxide cathodes can deliver higher energy density batteries, but uncertainties remain over their charge compensation mechanisms and the degradation processes that limit cycle life. Trapped molecular O
The nano-heteroarchitecture of Au@ZnO evidencing the surface attachment without chemical reaction at interface delivered enhanced PEC activities by facilitating injection hot electrons from SP state into conduction band ZnO.
A porous 1D nanostructure provides much shorter electron transport pathways, thereby helping to improve the life cycle of device and overcome poor ionic electronic conductivity, interfacial impedance between electrode-electrolyte interface, low volumetric energy density. In view this, we report on feasibility NiO nanorods comprising interlocked nanoparticles as an active electrode for capturing greenhouse CO2, effective supercapacitors, efficient electrocatalytic water-splitting...
Ni-rich layered cathodes deliver high energy densities, but uncertainties remain about their charge compensation mechanisms and the degradation processes that limit cycle life. Recent studies have identified trapped molecular O2 within LiNiO2 at states of charge, as seen for Li-rich where excess capacity is associated with reversible O2−/O2 redox. Here we show bulk redox in occurs by Ni-O rehybridization, lowering electron density on O sites, without significant involvement O2. Trapped...
Nitric oxide (NO) donating drugs such as organic nitrates have been used to treat cardiovascular diseases for more than a century. These donors primarily produce NO systemically. It is however sometimes desirable control the amount, location, and time of delivery. We present design novel pH-sensitive release system that achieved by synthesis dipeptide diphenylalanine (FF) graphene (GO) co-assembled hybrid nanosheets (termed FF@GO) through weak molecular interactions. were characterised using...
Core loss spectroscopies can provide powerful element-specific insight into the redox processes occurring in Li-ion battery cathodes, but this requires an accurate interpretation of spectral features. Here, we systematically interpret oxygen K-edge core spectra layered lithium transition-metal (TM) oxides (LiMO2, where M = Co, Ni, Mn) from first principles using density-functional theory (DFT). Spectra are simulated three exchange–correlation functionals, comprising generalized gradient...
Abstract Aeschynomene aspera (AA) plant, a sustainable, waste natural carbon source, is used towards green and scalable synthesis of two‐dimensional materials by simply altering the heating temperature its composites with nickel oxide (NiO) are fabricated as an anode for high‐performance lithium‐ion batteries (LIBs). Interestingly, wide range (amorphous carbon, graphene‐oxide (GO), reduced‐graphene‐oxide(RGO)) can be synthesized from this source that in different applications. Among them, GO...
The cathode-electrolyte interphase (CEI) in Li-ion batteries plays a key role suppressing undesired side-reactions whilst facilitating transport. Ni-rich layered cathode materials offer improved energy densities, but their high interfacial reactivities can negatively impact cycle life and rate performance. Here we investigate the of electrolyte salt concentration, specifically LiPF6 (0.5-5 m), altering reactivity charged LiN0.8Mn0.1Co0.1O2 (NMC811) cathodes standard carbonate based...
Core loss spectroscopies can provide powerful element-specific insight into the redox processes occurring in Li-ion battery cathodes, but this requires accurate interpretation of spectral features. Here, we systematically interpret oxygen K-edge core spectra layered lithium transition-metal (TM) oxides (LiMO2 where M=Co, Ni ,Mn) from first principles using density-functional theory (DFT). Spectra are simulated three exchange-correlation functionals, comprising GGA functional PBE, DFT-PBE +...
The ultrathin 2D morphologies are found efficient in delivering better specific energy and long cycle life performance for supercapacitors. Therefore, we report the effect of morphological transformation from nanoparticles to nanodiscs MnTiO3(MTO) perovskites as an electrode electrochemical supercapacitor where interconnected network stacked provided easily accessible sites diffusion OH - ions deep inside material. Ultrathin MTO delivered a capacitance 1513.7 F/g, capacity 103.2 mAh/g, power...
Metallic lithium electrodes hold promise for increasing the energy density of Li-ion batteries, and when used in conjunction with solid electrolytes, adverse safety implications associated dendrite formation organic liquid electrolytes can be overcome. To better understand stability contact reactions that occur, we utilise hard X-ray photoelectron spectroscopy to access chemistry buried electrode-electrolyte interfaces. We thus present an experimental approach preparation cycling cells...
Li-ion rechargeable batteries are increasingly used as power sources for portable consumer products and electric vehicles. The formation of stable electrode-electrolyte interphases is critical to long-term performance, however, these typically degrade during extended cycling due ongoing side reactions electrode cross-talk. Over the past few years, various electrolyte additives have been reported being able improve properties formed on surfaces suppress cell degradation. However, often tuned...