Ca substituion instead of Sr in La${}_{0.58}$Sr${}_{0.4}$Co${}_{0.2}$Fe${}_{0.8}$O${}_{3-\delta }$ as a cathode electrode for IT-SOFCs

Abstract

La${}_{0.58}$Ca${}_{0.4}$Co${}_{0.2}$Fe${}_{0.8}$O${}_{3-\delta }$ (L58CCF) was synthesized and evaluated as a cathode electrode for intermediate temperature solid oxide fuel cells (IT-SOFC) based on the Y${}_2$O${}_3$-stabilized ZrO${}_2$ (YSZ) electrolyte. The effect of sintering temperature on the L58CCF performance was investigated. The best Area specific resistances (ASRs) for the L58CCF sintered at 950 ${}^{\circ }$C were 1.218, 0.447, 0.228, 0.156, 0.099 $\Omega .c{m}^2$ at 600, 650, 700, 750, 800 ${}^{\circ }$C, respectively.

arXiv comment13 pages, 15 figures