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Updated: Jun 12, 2025
Probing and Mapping Electrode Surfaces in Solid Oxide Fuel Cells
Published on: September 20, 2012
Performance optimization of metal-supported solid oxide fuel cells using cathode and full cell impregnation with
Xin Song1,2, Che Wang1,2, Na Xu1,2
1Key Laboratory of Preparation and Application of Environmental Friendly Materials of Ministry of Education, Jilin Normal University Changchun 130103 China xuna8912@126.com mengjunling@jlnu.edu.cn.
Abstract:
In this study, precursor solutions of La0.4Sr0.6Co0.2Fe0.7Nb0.1O3- (LSCFN) symmetric electrode were prepared, and the applications of cathode impregnation and full cell impregnation in the preparation and performance optimization of four-layer metal-supported solid oxide fuel cells (MSCs) were thoroughly investigated. Test results indicate that the polarization impedance of cathode impregnated MSCs under H2 and CH4 atmospheres at 750 °C is approximately 0.1 Ω cm2 and 0.41 Ω cm2, respectively, with power densities of 1115 mW cm-2 and 700 mW cm-2, respectively. Meanwhile, the polarization impedance of full cell impregnated MSCs under the same conditions is 0.12 Ω cm2 and 0.40 Ω cm2, with power densities of 945 mW cm-2 and 840 mW cm-2, respectively. Remarkably, MSCs full cell impregnated LSCFN exhibit outstanding stability performance under CH4 atmosphere in a 100 h stability test. Research on the application of impregnation method for performance optimization of metal-supported cells is relatively scarce. The results reveal the feasibility of simplifying MSCs preparation steps using full cell impregnation method, further promoting the widespread application of metal-supported overall cells.
