A novel BaCe_0.5Fe_0.3Bi_0.2O_3-δ perovskite-type cathode for proton-conducting solid oxide fuel cells

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• 作者：Duo Shan^a ; Zheng Gong^a ; Yusen Wu^a ; Lina Miao^a ; Kuan Dong^a ; Wei Liu^a ; ^b ; ^{wliu@ustc.edu.cn}
• 关键词：Proton-conducting SOFCs ; Doped barium cerate ; Solid oxide fuel cells ; Perovskite structure
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：43
• 期：4
• 页码：3660-3663
• 全文大小：985 K
• 卷排序：43

文摘

A perovskite-type BaCe0.5Fe0.3Bi0.2O3-δ (BCFB) was employed as a novel cathode material for proton-conducting solid oxide fuel cells (SOFCs). The single cells with the structure of NiO-BaZr0.1Ce0.7Y0.2O3-δ (BZCY7) anode substrate|NiO-BZCY7 anode functional layer|BZCY7 electrolyte membrane|BCFB cathode layer were fabricated by a dry-pressing method and investigated from 550 to 700 °C with humidified hydrogen (~3% H2O) as the fuel and the static air as the oxidant. The low interfacial polarization resistance of 0.098 Ω cm2 and the maximum power density of 736 mW cm−2 are achieved at 700 °C. The excellent electrochemical performance indicates that BCFB may be a promising cathode material for proton-conducting SOFCs.