A5029274203- Fuel Cells and Related Materials
- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Conducting polymers and applications
- Supercapacitor Materials and Fabrication
- Membrane-based Ion Separation Techniques
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Advancements in Solid Oxide Fuel Cells
- MXene and MAX Phase Materials
- Electrochemical Analysis and Applications
- Advanced Photocatalysis Techniques
- Membrane Separation Technologies
- Electrochemical sensors and biosensors
- Hybrid Renewable Energy Systems
- Advanced Memory and Neural Computing
- Molecular Junctions and Nanostructures
- Effects of Environmental Stressors on Livestock
- Catalytic Processes in Materials Science
- Animal Behavior and Welfare Studies
- Chemical Synthesis and Characterization
- Protein purification and stability
- Advancements in Battery Materials
- Photovoltaic System Optimization Techniques
- Genetic and phenotypic traits in livestock
Central Electrochemical Research Institute
2016-2025
Academy of Scientific and Innovative Research
2017-2025
Council of Scientific and Industrial Research
2010-2022
Structural Engineering Research Centre
2010-2018
National Dairy Research Institute
2017
Daegu Gyeongbuk Institute of Science and Technology
2013-2016
Sulfonic acid-functionalized graphene (S-graphene) is employed as a promising inorganic filler well solid acid proton conducting medium to realize composite membrane with Nafion for polymer electrolyte fuel cell (PEFC) applications under reduced relative humidity (RH). The functionalization of performed by sulfonic acid-containing aryl radicals increase the number sulfonate groups per unit volume domain. A Nafion–S-graphene obtained embedding S-graphene in Nafion, which provides high...
Activated carbon is synthesized using orange peel as precursor through chemical activation H3PO4 and its ability electrocatalyst support for ORR reaction examined. The prepared material was subjected to various structural, compositional, morphological electrochemical studies. For activity, the platinum loaded on activated (Pt/OP-AC) investigated by cyclic voltammograms (CVs) recorded in N2 O2 saturated 0.1 M aqueous HClO4. supercapacitor performance, three electrode systems tested H2SO4...
Sulfonic acid functionalized graphene (S-graphene) is explored as a potential inorganic filler well solid proton conducting medium to realize hybrid membrane with Nafion for direct methanol fuel cell (DMFC). The simple, but effective, functionalization of performed by sulfonic containing aryl radicals increase the number sulfonate groups per unit volume domain. Nafion–S-graphene membranes compactness ionic domains and enhanced conductivity while restricting crossover across membrane. DMFCs...
High cost of benchmarked platinum-based electro-catalyst restricts their extensive usage in various energy technologies such as fuel cell. To overcome this, we report a simple, economical and facile synthesis route for series edge-defective nitrogen doped graphene (NG) from oxide the presence melamine precursor. The oxygen reduction reaction activity NG alkaline medium is studied with varying GO to ratio optimize N-content sheet. Cyclic voltammograms linear sweep have been recorded N2/O2...
The future advancement of anion exchange membrane fuel cells (AEMFCs) relies on the development effective, durable, and economical oxygen reduction reaction (ORR) catalysts. This study introduces cost-effective, nonprecious metal electrocatalysts, specifically Co Ni-based bimetallic nanocomposites (CoNi-bpy) synthesized with 4,4′-bipyridine as N-doped carbon supports, which demonstrate significant potential to enhance ORR performance in AEMFCs. Incorporating Ni both individually combination...
Nafion-silica composite membranes are fabricated by embedding silica particles as inorganic fillers in perfluorosulfonic acid ionomer a novel water hydrolysis process. The process precludes the use of an added but exploits acidic characteristic Nafion facilitating situ polymerization reaction through sol-gel route. helps forming silica/siloxane polymer within membrane. filler materials have high affinity to and assist proton transport across electrolyte membrane fuel cell (PEFC) even under...
Novel mixed-matrix membranes prepared by blending sodium alginate (NaAlg) with polyvinyl alcohol (PVA) and certain heteropolyacids (HPAs), such as phosphomolybdic acid (PMoA), phosphotungstic (PWA) silicotungstic (SWA), followed ex-situ cross-linking glutaraldehyde (GA) to achieve the desired mechanical chemical stability, are reported for use electrolytes in direct methanol fuel cells (DMFCs). NaAlg-PVA-HPA mixed matrices possess a polymeric network micro-domains that restrict cross-over....
Porous carbon derived from silk cotton and heteroatom engineering is explored in this study for developing metal-free electrocatalysts oxygen reduction (ORR). Individual dual doping of N F heteroatoms was conducted to regulate defects the pore geometry porous matrix. Microscopic analysis N–F co-doped (N–F/CTC) undergoes morphological amendments its textural properties responsible creating active sites ORR. N–F/CTC catalyst exhibits excellent ORR catalytic activity methanol CO tolerance...
The present study designates the heteroatom (N,F)-doped various graphitic carbon nanofibers (GNFs) viz. GNF-linear segmented platelets, antlers, herringbone type, and their structural deformations from pristine fiber with many open-edge active centers as metal-free, cost-effective electrocatalysts for oxygen reduction reaction (ORR) in polymer electrolyte membrane fuel cells (PEMFCs). Introduction of heteroatoms to GNF frameworks enlarges lattice spacing between graphene platelets leads...
Fuel cells have emerged as a promising alternative to conventional energy sources due their high conversion efficiency and low environmental impact. However, the development of efficient cost-effective catalysts for fuel cell electrodes remains significant challenge. Carbon quantum dots (CQDs) candidates, with unique electronic optical traits, excellent electrochemical activity, cost-effectiveness. We synthesized CQD investigated its structural transformation into carbon nanoneedles through...
A new mixed-matrix membrane based on stabilized phosphotungstic acid (PTA) incorporated to chitosan (CS)-hydroxy ethyl cellulose (HEC) for application in direct methanol fuel cells (DMFCs) is reported. Membranes are characterised using Fourier Transform Spectroscopy (FTIR), Thermo-Gravimetric Analysis (TGA), Scanning Electron Microscopy (SEM) and their mechanical properties evaluated. The PTA content the CS-HEC blend its influence proton conductivity, water/methanol sorption, cross-over DMFC...