A5059105336- Advancements in Solid Oxide Fuel Cells
- Ferroelectric and Piezoelectric Materials
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Thermal Expansion and Ionic Conductivity
- Dielectric properties of ceramics
- Electronic and Structural Properties of Oxides
- Microwave Dielectric Ceramics Synthesis
- Supercapacitor Materials and Fabrication
- Transition Metal Oxide Nanomaterials
- Advancements in Battery Materials
- Dielectric materials and actuators
- Gas Sensing Nanomaterials and Sensors
- Pickering emulsions and particle stabilization
- Advanced Chemical Sensor Technologies
- Nuclear Materials and Properties
- Conducting polymers and applications
- Advanced Battery Materials and Technologies
- Advanced ceramic materials synthesis
- Metal Extraction and Bioleaching
- Advanced Photocatalysis Techniques
- Magnetic Properties of Alloys
- Magnetic Properties and Synthesis of Ferrites
- Magnetic properties of thin films
- Fuel Cells and Related Materials
Deen Dayal Upadhyaya Gorakhpur University
2020-2025
Indian Institute of Technology Kharagpur
2016-2018
National Institute of Technology Raipur
2018
Zn substitution at Cu site in Cu<sub>3</sub>SbSe<sub>4</sub> reduces the thermal conductivity giving beneficial effect to thermoelectric figure of merit.
CoFe2O4 ceramic was fabricated using a sol-gel auto-combustion process. The cubic spinel structure with F d −3 m space group symmetry confirmed through the Rietveld refinement of XRD pattern sintered at 800 °C for 4 h. cobalt vacancies tetrahedral site were verified by electron density distribution calculated maximum entropy method. impedance spectroscopy study revealed that grain boundary dominant compared to in electrical properties CoFe2O4. total dc resistivity fitted variable range...
Abstract In this study, the Ho-substituted BaZrO 3 electrolyte ceramics (BaZr 1- x Ho O 3-δ , 0.05 ≤ 0.20) were synthesized through a low-cost flash pyrolysis process followed by conventional sintering. The effects of Ho-substitution in studied terms structural phase relationship, microstructure and electrical conductivity to substantiate augmented total for intermediate temperature solid oxide fuel cells (IT-SOFCs). Rietveld refined X-ray diffraction (XRD) patterns revealed that pure with...
The MgAl2O4 nanocrystalline powder was synthesized using naturally available egg white and inexpensive metal nitrate salts. During this process, the freshly extracted mixed with salt subsequently heated at 350 °C in a pit furnace. entire dehydration of aqueous solution thus facilitates low-density fluffy mass. From TGDTG results, it observed that maximum decomposition precursors occurred below 600 °C. Therefore, calcination temperature as-synthesized set bulk ceramic foam fabricated by...
The effect of spark plasma sintering (SPS) on Ho-substituted BaZrO3 electrolyte ceramics was investigated to enhance the electrical conductivity for intermediate temperature solid oxide fuel cells (IT-SOFCs). cubic crystal system with Pm3̅m space group symmetry, unit cell parameters, and bond length were revealed through Rietveld refined X-ray diffraction (XRD) pattern. microstructure BaZr0.9Ho0.1O3−δ (BZH10) BaZr0.8Ho0.2O3−δ (BZH20) SPS samples found be highly dense exhibits mixed...
An eco-friendly fabrication of porous MgAl<sub>2</sub>O<sub>4</sub> ceramic foam for efficient dye adsorption.
Barium Zirconate (BaZrO3) nanoparticles are synthesized by flash pyrolysis combustion process. Rietveld refinement of XRD pattern calcined powder at 900 °C, 1100 °C and sintered 1600 describes that a single-phase compound is formed an Pm-3m cubic crystal structure with lattice constant = 4.19102, 4.192693, 4.195276 Å respectively. Crystallize size found 34.28, 37.7 47.14 nm respectively using Scherrer formula. The FESEM image pellet for 4 h porous nature the sample. Nyquist plots indicate...
<title>Abstract</title> In this research work, highly dense BaZr<sub>0.85</sub>Ho<sub>0.10</sub>Y<sub>0.025</sub>Nd<sub>0.025</sub>O<sub>3-δ</sub> electrolyte ceramic was synthesized through a cost-effective flash pyrolysis route followed by conventional sintering for intermediate-temperature solid oxide fuel cells. The calcined powder and sintered pellet were characterized various techniques like HRXRD, HRTEM, FESEM, EDS, Raman spectroscopy. XRD pattern of shows the pure cubic phase with...
In the present work, dielectric and modulus studies of polycrystalline BaZrO3 ceramic, prepared by modified combustion method followed conventional sintering, are investigated over frequency range 100 Hz to 106 at different temperatures from 250 500 °C in air. The high value constant (ε′ ∼ 103) temperature low can be attributed Maxwell–Wagner polarization mechanism as well thermally activated charge carriers. Electric reveal two type relaxations 800 region studied frequencies