Evolution of the sintering ability, microstructure, and cell performance of Ba0.8Sr0.2Ce0.8−x−yZryInxY0.2O3−δ (x = 0.05, 0.1 y = 0, 0.1) proton-conducting electrolytes for solid oxide fuel cell
Source abstract
Abstract
Ba0.8Sr0.2Ce0.8−x−yZryInxY0.2O3−δ (x = 0.05, 0.1 y = 0, 0.1) proton-conducting oxides are prepared using a solid state reaction process. The effect of indium contents on the microstructures, chemical stability, electrical conductivity, and sintering ability of these Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2−xO3−δ oxides were systemically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and two probe conductivity analysis. The results reveal that the Ba0.8Sr0.2Ce0.6Zr0.2InxY0.2−xO3−δ oxides are cubic perovskite crystal structure without second phase. Surface morphology of 1450°C, 4 h sintered oxides shows a dense microstructure. The optimum conductivity of Ba0.8Sr0.2Ce0.75In0.05Y0.2O3−δ oxide is 0.011 S/cm measured at 800°C. Chemical stability of the oxides to resist CO2 at 600°C is effectively improved by doping 0.1 at % indium or more. In addition, the laminated electrolyte and anode layers which fabricated by tape casting were co-sintered at 1450°C for 4 h. The sintered half-cell coated with Pt paste as cathode was used for I–V curve performance testing. The performance of the single cell of anode supported proton-solid oxide fuel cell (P+-SOFC) have powder density of 139.8 mW/cm at 800°C. Therefore, the Ba0.8Sr0.2Ce0.75In0.05Y0.2O3−δ ceramic is suggested to be a potential electrolyte material for P+-SOFC applications.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Solid Oxide Fuel Cells · Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Materials Science and Engineering, National Central University
Department of Mechanical Engineering, National Central University
Department of Materials Science and Engineering, National United University
Department of Chemical Engineering and Materials Science, Yuan-Ze University
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