中文摘要：

借助交流阻抗谱测试技术和扫描电镜,研究了Pt/YSZ电极烧制的升/降温速率对氧传感器性能的影响。研究表明：升/降温速率对电极阻抗和氧传感器响应时间有显著影响;小于500℃时,升/降温速率对电极反应激活能无明显影响,为（150±10）kJ.mol-1;大于600℃时,升温速率对电极反应激活能亦无明显影响,为（180±5）kJ.mol-1,但增加降温速率,激活能会发生突变。

英文摘要：

By means of SEM observation and complex AC impedance,the effects of heating/cooling rate of the Pt/YSZ electrodes sintering processes on the characteristics of oxygen sensors were studied.The investigation indicated that the heating/cooling rate affected the interfacial resistances of Pt/YSZ electrodes and the response time of oxygen sensors badly;below 500 ℃,the activation energy of electrode reaction remains（150±10） kJ·mol-1 with different heating/cooling rates;above 600 ℃,the heating rate affected the activation energy little, it remained （180±5）kJ.mol-1, on the contrary, a sudden change to the activation energy can be observed when increase the cooling rate.