A5054963783- Advancements in Solid Oxide Fuel Cells
- Extraction and Separation Processes
- Chemical and Physical Properties in Aqueous Solutions
- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Magnetic and transport properties of perovskites and related materials
- Electronic and Structural Properties of Oxides
- Ionic liquids properties and applications
- Catalytic Processes in Materials Science
- Soil Mechanics and Vehicle Dynamics
- Fluoride Effects and Removal
- Advanced Photocatalysis Techniques
- Smart Agriculture and AI
- Geochemistry and Elemental Analysis
- Process Optimization and Integration
- Agricultural Engineering and Mechanization
- Thermal Expansion and Ionic Conductivity
- Catalysis for Biomass Conversion
- Crystallization and Solubility Studies
- Ammonia Synthesis and Nitrogen Reduction
- Phosphorus and nutrient management
- Thermodynamic properties of mixtures
- Catalysis and Oxidation Reactions
- Supercapacitor Materials and Fabrication
Indian Institute of Technology Delhi
2019-2025
Visvesvaraya National Institute of Technology
2017-2018
Rashtrasant Tukadoji Maharaj Nagpur University
2018
Intermediate temperature (IT) solid oxide fuel cell (SOFC) development is hindered by slow oxygen reduction reaction (ORR) and poor CO2 tolerance at the cathode electrode. Here, we present a successful synthesis of composite material consisting double perovskite structure Sr2CoNbO6−δ (SCNO) fluorite Sm0.2Ce0.8O2−δ (SDC), using one-pot method. Integrating SDC to form SCNO–SDC substantially augments number active sites, resulting in high ORR activity lower polarization resistance. Forming...
Malonic acid is an essential carboxylic that used as a backbone reactant in deriving multiple higher-order compounds. The successful attempt of producing malonic from biological route has attracted the scientific community to extract fermentation broth or dilute aqueous stream. Experimental study on recovery by reactive extraction was performed, and effects TBP concentration, diluents (alkane, ketone, alcohol), concentration were investigated. equilibrium models (relative basicity mass...
High entropy perovskite oxides have the potential to significantly enhance electrode performance in solid oxide fuel cells (SOFCs) and batteries. However, not all high configurations yield single-phase oxides....
Improved oxygen reduction reaction (ORR) performance of perovskite cathode material is crucial for the widespread utilization and advancement intermediate temperature solid oxide fuel cell (IT-SOFC). A composite Sr 2 CoNbO 6-δ @Sm 0.2 Ce 0.8 O 2- δ (SCNO@SDC) nanofibers fabricated using electrospinning, followed by high-temperature sintering process, its electrochemical activity towards ORR analyzed. The XRD STEM confirmed phase morphology nanofiber composites. Conductivity studies revealed...
A conceptual design of an ISPR configuration for the biosynthesis, separation, and recovery PCA by reactive extraction with TBP in natural non-toxic diluents.
The present work explores the application of La0.5Sr0.5Co0.95Nb0.05O3-δ (LSCNO) perovskite as electrode material for symmetric solid oxide fuel cell. Symmetric cells thin-film LSCNO electrodes were prepared to study oxygen reduction reaction at intermediate temperature. Rietveld refinement synthesized shows a hexagonal structure with R-3c space group material. Lattice parameter and fractional coordinates utilized calculate ion diffusion coefficient molecular dynamic simulation. At 973 K, was...
Abstract Electrochemical conversion of biomass to value‐added chemicals has gained impetus in recent years. Herein, we present a methodology for recovering biomass‐derived 2‐furoic acid from the dilute aqueous stream by reactive extraction. The extraction was performed using chemical extractant, trioctylamine (TOA), with diluents (octanol, chloroform, and diethyl ether). Equilibrium parameters influencing recovery were evaluated. Using TOA various diluents, recovered 85%–99% efficiency. A...
Boosting the lower oxygen reduction reaction (ORR) activity of perovskite cathode material is essential for development and widespread use IT-SOFC. Oxygen ion migration at cathode-electrolyte interface can enhance by introducing structural modifications consisting high grain boundary density heterointerfaces [1]. Herein, we fabricated Sr 2 CoNbO 6- δ @Sm 0.2 Ce 0.8 O 1.9 (SCNO@SDC) nanofiber composite using an electrospinning technique examined electrochemical impedance symmetric cell in air...
Oxygen reduction reaction (ORR) in a double perovskite material is considered to be the most sluggish intermediate temperature operation of solid oxide fuel cell (SOFC). ORR often inhibited by poor oxygen surface exchange rates or bulk diffusion material. In order understand rate-limiting process material, we have fabricated dense thin-film composition Sr 2 CoNbO 6- δ . The pulse laser deposition (PLD) method employed fabricate geometrically well-defined symmetric electrodes SCN on an...
For solid oxide fuel cells (SOFCs), the electrode fabrication with electrolyte showing a good thermal expansion coefficient (TEC) match at high temperatures is considered key element in deciding upon potential of candidate material. Here, this work Nb doped perovskite La 0.7 Sr 0.3 Co 0.95 0.05 O 3- δ (LCSN) material tested for desired properties SOFC cathode. The results are improved by about 28% temperature range 200 - 2100 K and an increase ionic conductivity 19% 873 as compared to base...
Simple perovskite structured electrode materials of the series (La x Sr 1-x CoO 3- δ ) are commonly utilised for high-temperature solid-state electrochemical cells and Li-air batteries with some limitations observed on prolong operations due to structural instability associated segregation strontium ions. In order overcome this incompatibility, doping heterovalent dopant at B-site is proposed which could possibly improve upon stability by controlling surface cations. addition, doped...