两种纳米铂电极电催化氧化甲醇的性能比较  

Comparison of the performance of two kinds of nano - platinum electrode electrochemical catalytic oxidation methanol

作　　者：罗永平[1] 廖卫兵[1] 徐顺建[1] 钟炜[1] 肖宗湖[1] 李水根[1] 李泽斌[1] 

机构地区：[1]新余学院新能源科学与工程学院,江西新余338004

出　　处：《新余学院学报》2013年第5期4-7,共4页Journal of Xinyu University

基　　金：国家自然科学基金资助项目(51263021;51162025);江西省自然科学基金资助项目(20122BAB216010);江西省教育厅科学技术研究项目(GJJ13778);新余学院科研项目(xj1102;xj1101)

摘　　要：采用热解法和电化学沉积法两种方法,在洁净的FTO导电玻璃上沉积纳米铂,用于甲醇的直接电催化氧化。利用SEM、XRD手段对这两种纳米铂催化剂形貌和结构进行了表征,并用电化学方法分析它们的稳定性和对甲醇电催化氧化的活性。实验结果表明,用热解法制备的纳米铂致密地分布在FTO导电玻璃上,而通过电化学沉积方法制备的纳米铂微粒在FTO导电玻璃上分布均匀,其粒径随还原沉积时间的增加逐渐增大,到一定程度会形成团聚。在电极稳定性和对甲醇电催化氧化活性方面,电化学沉积制备的纳米铂催化剂优于热解制备的纳米铂催化剂。Pyrolysis method and electrochemical deposition method were adopted. Nao -platinum was deposited on the pure FI＇O con- ductive glass for direct electrochemical oxidation of methanol. SEM and XRD were used to characterize the shape and structure of two nano - platinum catalysts. Electrochemical method was used to analyse their stability and activeness on methanol electrochemical oxida- tion. Experiments showed that the nano - platinum prepared by pyrolysis method was compactly distributed on b-TO conductive glass While the nano - platinum particles prepared by electrochemical deposition method were evenly distributed whose size gradually increased with the reduction deposition time and formed agglomerates to a certain degree. In the aspects of electrode stability and activeness of methanol electrochemical oxidation, the nano - platinum catalyst prepared by electrochemical deposition method was better than the nano -platinum catalyst prepared by pyrolysis method.

关 键 词：纳米铂 催化剂 电催化氧化 直接甲醇燃料电池 

分 类 号：TM914.4[电气工程—电力电子与电力传动]