A5002353160- Advancements in Solid Oxide Fuel Cells
- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Fuel Cells and Related Materials
- Thermal Expansion and Ionic Conductivity
- Ferroelectric and Piezoelectric Materials
- Gas Sensing Nanomaterials and Sensors
- Catalysis and Oxidation Reactions
- Microwave Dielectric Ceramics Synthesis
- Semiconductor materials and devices
- Advanced Chemical Sensor Technologies
- Analytical Chemistry and Sensors
- Advanced ceramic materials synthesis
- Chemical Looping and Thermochemical Processes
- Inorganic Chemistry and Materials
- Solid-state spectroscopy and crystallography
- Crystal Structures and Properties
- Perovskite Materials and Applications
- Nonlinear Optical Materials Research
- Electrical and Thermal Properties of Materials
- Ionic liquids properties and applications
- Catalytic Processes in Materials Science
- Advanced Materials and Semiconductor Technologies
- nanoparticles nucleation surface interactions
- Magnesium Oxide Properties and Applications
Institute of High Temperature Electrochemistry
2014-2024
Ural Branch of the Russian Academy of Sciences
2013
Russian Academy of Sciences
2005-2013
Chulalongkorn University
2006
University of Washington
2005
Layered lanthanide nickelates Ln2NiO4+δ are considered as potential cathode materials in solid oxide fuel cells. In this study, the chemical stability, thermal expansion and electrical conductivity of a number layered nickelates, namely Lа2NiO4+δ, Pr1.7Sr0.3NiO4+δ, Pr1.7Ca0.3NiO4+δ Nd1.9Ca0.1NiO4+δ, investigated. Based on studies, composite material consisting Sr0.98Zr0.95Yb0.05O3–δ oxides (PCN-SZYb) was selected suitable oxygen electrode for proton-conducting electrolyte. The...
The effect of Sr-nonstoichiometry on phase composition, microstructure, defect chemistry and electrical conductivity SrxZrO3−δ SrxZr0.95Y0.05O3−δ ceramics (SZx SZYx, respectively; x = 0.94–1.02) was investigated via X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy impedance followed by distribution relaxation times analysis data. It shown that at low Sr deficiency (x > 0.96 0.98 for SZx respectively) a solid solution strontium vacancies in zirconate crystal...
Solid oxides with high oxygen-ion and proton conductivity have been extensively studied for applications in electrochemical devices such as fuel cells, electrolyzers, sensors, hydrogen separators, etc. However, the preparation of high-density ceramic electrolytes is often complicated by exceptional refractoriness most conducting solid oxide phases. Therefore, conventional sintering these materials very energy consuming low effective. In recent years, non-conventional field-assisted...
Planar cells incorporating a microelectrode as the working electrode were prepared using materials and techniques commonly employed in fabrication of planar solid oxide fuel cells. Initial results ac dc polarization measurements suggest that these potentially offer excellent isolation frequency response (impedance), quantification steady-state current-overpotential relationships. The success technique relies heavily on how precisely geometry pattern is defined characterized. Some challenges...
A solid-state amperometric sensor based on yttria-stabilized zirconia (YSZ) for the simultaneous measurement of CO and CO2 concentrations in inert gases was fabricated. The designed consists two electrically isolated ceramic cells made YSZ equipped with Pt electrodes. Ceramic capillaries connecting an inner gas chamber each cell outside atmosphere serve as diffusion barriers. One is intended sensing CO, whereas other gaseous atmosphere. electrochemical response studied temperature range...
The effect of Sr-deficiency on microstructure, phase composition and electrical conductivity SrxZr0.95Yb0.05O3-δ (x = 0.94-1.00) was investigated via X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy impedance spectroscopy. samples were synthesized by a chemical solution method sintered at 1600 °C. According to diffraction data, the with x 0.96-1.00 single-phase oxides possessing an orthorhombic perovskite-type structure; while zirconia-based minor phases arouse...
The effect of Sr deficiency on the hydration process and ionic electronic conductivity Yb-doped SrZrO3 proton conductors with a perovskite-type structure was investigated. Dense SrxZr0.95Yb0.05O3-δ (x = 0.94–1.00) ceramics were prepared using solution combustion synthesis. Thermogravimetry Raman spectroscopy methods used to determine concentration bulk protonic species. found enhance ability zirconate; however, lowering content x 0.94 deteriorated uptake. series depending oxygen partial...