电沉积双金属微粒电极及对甲醇的电催化研究  

Study on Electrodeposition of Bimetallic Microparticle Electrode and Its Electrocatalytic Oxidation for Methanol

作　　者：汪振辉[1] 陈体伟[1] 李晶[1] 王栋[1] 乔海燕[1] 黄爱平[1] 

机构地区：[1]河南师范大学化学与环境科学学院,新乡453007

出　　处：《化学学报》2009年第5期392-396,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(No.20675026)资助项目

摘　　要：以循环伏安法在镍铬铁基体上制备了Pt-Ru微粒电极,用SEM表征该微粒电极的形貌呈球形,循环伏安法和计时电流法考察了该电极的电化学性能.结果表明Pt-Ru微粒电极对甲醇的电氧化显示出催化作用,Ru的加入提高了电极的抗中毒能力.在相同的实验条件下,Pt-Ru微粒电极对甲醇的催化氧化性能高于纯铂电极,且该电极制作成本十分低廉、操作简便、对环境无污染,极大减少了贵金属铂的用量,可用作燃料电池的电极材料.An original Pt-Ru bimetallic microparticle elelctrode was prepared by cyclic voltammetry at nichrome substrate. SEM results revealed that the deposits were composed of spherical granular microparticles. Cyclic voltammetry and chronoamperometry were used to characterize its electrochemical behavior. The results indicated that the Pt-Ru microparticle electrode improved the properties of the substrate material and enhanced the catalytic activity for methanol electrooxidation. Under the same conditions, the electrocatalytic ability of the electrode was higher than that of the pure Pt electrode. The cost for preparing the electrode was greatly decreased, the procedure was much simplified, no pollution and no contamination for the environment. The Pt-Ru microparticle electrode loaded on nichrome substrate showed an improved performance towards methanol oxidation and was likely a potential electrocatalyst towards methanol electrooxidation.

关 键 词：Pt-Ru微粒电极 电沉积 甲醇氧化 电催化 

分 类 号：TM912[电气工程—电力电子与电力传动]