SrRuO3阳极催化剂的制备及对乙醇电催化氧化性能研究

用溶胶凝胶法制备了钙钛矿型氧化物SrRuO₃，热重分析和X射线衍射分别对制备过程和产物进行了分析和表征。采用循环伏安、计时电流和交流阻抗方法测试了所得产物对常温下碱性介质中乙醇电化学氧化的催化性能。循环伏安曲线、计时电流和交流阻抗结果表明：在乙醇溶液中，阳极电流密度明显大于氢氧化钾溶液中的阳极电流密度，并且随着电极中SrRuO₃含量的增加，电流密度也大幅度增加，在乙醇溶液中，SrRuO₃电极的电荷迁移阻抗明显降低。SrRuO₃对乙醇电化学氧化具有良好的催化作用。

Preparation and Electrocatalytic Properties of SrRuO3 Anodic Catalyst for Ethanol Electro-oxidation

The sol-gel method was employed to prepare perovskite SrRuO₃. The phase transition was determined by DTA-TG and the formation of perovskite structure was characterized by X-ray diffraction (XRD) Cyclic voltammetry, chronoamperometric and EIS were used to test the performance of SrRuO₃ as catalyst for electrochemical oxidation of ethanol in alkaline medium at room temperature. The Cyclic voltammetry, chronoamperometric and EIS, results indicate that the anode current density of SrRuO₃ electrode in ethanol solution is significantly higher than that in KOH solution. With the increase in SrRuO₃ content, the anode current density increases greatly. The charge transfer resistance in ethanol solution is lower than that in KOH solution. SrRuO₃ exhibits a remarkable catalytic activity for ethanol electro-oxidation.