After successfully prepared the nano- TiO_2, nano- CeO_2 coating TiO_2,the measurement and comparison of oxygen sensitivity and complex impedance have been carded out, and the results have been analyzed by thermodynamic and activity energy calculation.

• 在用溶胶-凝胶方法成功制备纳米TiO_2、纳米CeOSS-2包覆纳米TiO_2材料的基础上,进行了氧敏性能、阻抗谱的测试和对比,并且通过热力学和活化能计算对实验结果进行了分析。