一种简单的提高Pt/C电极电催化活性的处理方法  

A Simple Treatment Method for Increasing the Electrocatalytic Activity of Pt/C Electrode

作　　者：孙芳[1] 邬冰[1] 李桂春[1] 高颖[1] 陆天虹[2] 刘长鹏[2] 邢巍[2] 

机构地区：[1]哈尔滨师范大学理化学院化学系,哈尔滨150080 [2]中国科学院长春应用化学研究所

出　　处：《应用化学》2006年第4期429-431,共3页Chinese Journal of Applied Chemistry

基　　金：国家科技部"九七三"基金(G2000026408);"八六三"(2003AA517062);国家自然科学基金(20573029;20433060);黑龙江省教育厅基金(10531082);江苏省科技厅高新技术基金(BG200302);江苏省教育厅高新技术产业化基金(JH02-080);国家"211"工程重点学科建设资助项目

摘　　要：Pt/C电极用四氢呋喃和丙酮混合溶剂活化处理后,对乙醇氧化的电催化活性有明显提高,其主要原因是活化处理后能除去电极表面的杂质,增加了电极上Pt的活性表面。CO在活化处理后的Pt/C电极表面上的吸附强度降低。After the Pt/C electrode is treated with a mixed solvent of tetrahydrofuran and acetone, its electrocatalytic activity for ethanol oxidation is significantly increased. The main reason is that the treatment can remove the impurities, such as the surfactant introduced during the preparation of the Pt/C electrode, change the surface structure of the electrode to a certain extent and increase the exposed surface area of Pt. In addi- tion, the treatment of the Pt/C electrode can decrease the adsorption strength of CO, the intermediate of the ethanol oxidation, and hence decrease the poisoning effect of the adsorbed CO on the Pt/C electrode. The treatment method is simple and effective, and may be used in the preparation of DMFC.

关 键 词：直接甲醇燃料电池 PT 乙醇 CO 丙酮 四氢呋喃 

分 类 号：O646[理学—物理化学]