材料科学
阳极
固体氧化物燃料电池
极化(电化学)
阴极
电极
电化学
电解质
氧化物
钴
钙钛矿(结构)
氧化钴
化学工程
分析化学(期刊)
无机化学
冶金
化学
物理化学
工程类
色谱法
作者
Hong Cai,Jingsheng Xu,Ming Wu,Wen Long,Leilei Zhang,Zhaoyuan Song
标识
DOI:10.1016/j.jeurceramsoc.2020.04.050
摘要
Cobalt − free perovskite oxide La0.5Ba0.5Fe0.95Mo0.05O3−δ (LBFMo) was investigated as the electrode of symmetric solid oxide fuel cell (S − SOFC) based on 300−um − thick La0.9Sr0.1Ga0.8Mg0.2O3−δ (LSGM) electrolyte. The electrochemical performance of the S − SOFC with LBFMo|LSGM|LBFMo configuration was evaluated using ambient air as oxidant and H2 as fuel. The maximum power density (Pmax) of the S − SOFC achieves as high as 0.96 W cm−2 at 800 °C; meanwhile, the total polarization resistance (Rpt) of the S − SOFC (including the contributions of both cathode and anode) is only ∼0.12 Ω cm2. Impedance spectra analysis indicates the polarization associated with anode plays a more rate − limiting role in the whole electrochemical reaction process of the S − SOFC. In addition, using LBFMo as symmetric electrode, the S − SOFC also exhibits good cell stability. All results indicate that the LBFMo is a very potential candidate for S − SOFC electrode.
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