BaCe_(0.9)Y_(0.1)O_(3-α)固体电解质燃料电池性能

Performance of Solid Oxide Fuel Cell Using BaCe_(0.9)Y_(0.1)O_(3-α) as a Solid Electrolyte

通过高温固相反应制备了混合离子(质子和氧离子)导电性陶瓷BaCe_(0.9)Y_(0.1)O_(3-α),以该陶瓷作固体电解质,Pt作电极材料组成氢-空气燃料电池,测定了该燃料电池高温(600～1000℃)下放电时的电压-电流特性.结果表明,该燃料电池具有稳定的放电性能,输出功率密度高,1000℃下的最大短路电流密度和输出功率密度分别为980mA·cm^(-2)和0.22mW·cm^(-2),高于同类燃料电池的性能.

Using mixed proton and oxide - ion conductor with BaCe0.9 Y0.1 O3-α as a solid electrolyte, hydrogen - air fuel cell was constructed. The performances of the cell were investigated at temperatures between 600 and 1000℃. The maximum short - circuit current density and the maximum power output density of this cell at 1000℃ were about 980mA·cm-2 and 0. 22mW·cm-2, respectively. These performances were significantly better than those of other solid oxide fuel cells based on BaCe0.9M0.1O3-α(M = Sm, Gd, Yb, Nd, etc. ) reported so far.