Effect of Nature of the Ceramic Component of the Composite Electrodes Based on La1.7Ca(Sr)0.3NiO4+δ on Their Electrochemical Performance
The actual work focuses on the electrochemical performance of the La1.7Ca(Sr)0.3NiO4-based composite cathode materials with Ce0.8Sm0.2O1.9 (SDC) and BaCe0.89Gd0.1Cu0.01O3 (BCGC) ceramic component (in wight ratio 1:1) which were applied as a functional layer in two-layered electrodes with 98 wt.% LаNi0.6Fe0.4O3 + 2 wt.% CuO LаNi0.6Fe0.4O3 and 99.4 wt. % La0.6Sr0.4MnO3 + 0.6 wt.% CuO as a collector layer. Studies by impedance spectroscopy were performed in contact with BCGC and BaCe0.5Zr0.3Y0.2O3 + 1 wt.% CuO (BCZY) proton-conducting electrolytes in comparison with traditionally used 50 wt.% La0.6Sr0.4Fe0.8Co0.2O3 + 50 wt.% SDC and 50 wt.% La0.75Sr0.2MnO3 + 50 wt.% SSZ composite electrodes.
Keywords: La1.7Ca0.3NiO4, cathode, electronic conductivity, proton-conducting electrolyte
The authors are grateful for the financial support to: the Ministry of Education and Science of the Russian Federation (Mega-grand contract no. 14.Z50.31.0001), the Russian Foundation for Basic Research (grants no. 13-03-00065, 14-03-00414) and the Russian Foundation for Basic Research (grants no. 13-03 96098 and 14-03-00414).
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