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本文利用交流阻抗和直流极化的电化学方法,比较了200~500℃氧在Pt、Ag、Au、Ag-Pd四种化学镀电极上的扩散,350~600℃氧在金属电极/YSZ界面的电化学反应速度以及阴阳电荷传递系数;计算了350~600℃四种电极的界面阻抗;研究了400℃时O2在Ag-Pd电极界面的交换电流密度Io与氧分压Po2的定量关系.

A-C Impedance spectroscopy and steady-state D-C polarization have been investigated tocompare oxygen diffusion on Pt, An, Ag, Ag-Pd four pasted electrodes and electrochemical reactionrate from 200℃ to 600℃. Electrode interface impedance has been calculated in the temperaturerange of 350-600℃. Experiments confirm the relationship of the exchange current density Io asa function of oxygen partial pressure P0.67±0.1O2

参考文献

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