BaCo0.4Fe0.4Zr0.1Y0.1O3-δ(BCFZY)was synthesized by the citric acid complexation-nitrate combustion method,and then used as the air electrode material to fabricate a fuel electrode-supported reversible proton ceramic membrane cell(R-HCMC).The electrochemical performance of obtained R-HCMC under different operating modes was investigated.The results show that the BCFZY synthesized at 900℃ exhibits a single cubic perovskite structure.In fuel cell mode at 700℃,the maximum output power was 424.7 mW·cm-2,and the lowest polarization impedance was 0.23 Ω·cm2.In the electrolysis mode,when the electrolysis voltage is 1.4 V,the maximum current density was 1 084 mW·cm-2,and the hydrogen production rate was 3.1 mL·min-1·cm-2.The prepared BCFZY air electrode showed good electrical catalytical activity,and structure and performance stabilities under medium and low temperature conditions.
关键词
可逆陶瓷膜电池/质子导体/极化电阻/输出功率/产氢率/电化学性能/燃烧法/电极材料
Key words
reversible ceramic membrane cell/proton conductor/polarization resistance/output power/hydrogen production rate/electrochemical performance/combustion method/electrode material
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