摘要
应用循环伏安法电沉积多层聚吡咯-铂复合膜电极,研究该电极的甲醇电催化氧化性能.循环伏安和计时安培法测试表明,该复合膜电极具有更好的甲醇电催化活性和抗毒性.铂量增加,电极反应控制步骤将由CO氧化转化为甲醇的吸附脱氢.
Multilayer films of polypyrrole-platinum electrode were fabricated by cyclic voltammetric technique.Electro-oxidation of methanol on this electrode was investigated with the aid of cyclic voltammetry and chronoamperometry.Results demonstrated that the multilayer of polypyrrole-platinum electrode behaved better electrocatalytic performance for electro-oxidaton of methanol and better poison resistant.Furthermore,with the increase of deposited platinum loadings,the rate controlling step on electro-oxidation reaction of methanol was changed from CO oxidation to sorption-desorption of hydrogen.
出处
《电化学》
CAS
CSCD
北大核心
2011年第1期84-87,共4页
Journal of Electrochemistry
基金
国家自然科学基金面上项目(20965003)
辽宁省教育厅科学技术基金(2009B169)
辽宁省科技厅博士科研启动基金项目(20101106)
沈阳师范大学实验中心主任基金(SY200806)资助
关键词
甲醇氧化
电化学催化
聚吡咯
循环伏安
电沉积
methanol electro-oxidation
electrocatalysis
polypyrrole
cyclic voltammetry
electrodepositon
