Investigation of La2NiO4+δ-based cathodes for SDC–carbonate composite electrolyte intermediate temperature fuel cells
作者： Jianbing Huang , Ruifeng Gao , Zongqiang Mao , Jiayou Feng
DOI: 10.1016/J.IJHYDENE.2009.04.022
关键词:
摘要: Abstract Lanthanum nickelate based oxides, including La 2 NiO 4+δ (LN), Ni 0.8 Co 0.2 O (LNC82) and Fe (LNF82), were investigated as cathodes for intermediate temperature fuel cells with samaria doped ceria (SDC)–carbonate composite electrolytes. These oxides synthesized by glycine–nitrate process characterized XRD SEM, showing that all samples annealed at 800 °C 2 h exhibit a K NiF 4 phase foam-like structure. The electrochemical properties of these evaluated fabricating testing two kinds electrolytes, SDC-20 wt.% (0.53Li/0.47Na) CO 3 SDC-30 wt.% (0.67Li/0.33Na) , referred to SDC(53L47N)20 SDC(67L33N)30, respectively. Among three cathodes, LNC82 shows the best cell performances 500–600 °C. Moreover, SDC(67L33N)30 electrolyte present much higher power output than those electrolyte. It reveals cobalt doping greatly enhances property lanthanum nickelate, such are more compatible
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