直接醇类燃料电池用立体电极的构筑  

The fabrication of three-dimensional electrode for direct alcohol fuel cells

作　　者：谢方艳[1] 孟辉[1] 沈培康[1] 

机构地区：[1]中山大学物理科学与工程技术学院光电材料与技术国家重点实验室,广东广州510275

出　　处：《电池》2004年第3期219-221,共3页Battery Bimonthly

基　　金：国家"十五"863项目 ( 2 0 0 3AA5 170 5 0 ) ;广州市科技攻关重点项目 ( 2 0 0 3Z2 -D0 0 81)

摘　　要：通过四步法制备了一系列具有立体结构的Pt/PPy/PS/Au电极。这种立体结构使液体醇燃料较容易扩散到催化剂层 ,降低了液封效应 ,从而使电化学反应的三相界面增大。与相同Pt载量的传统电极相比 。A novel three-dimensional electrode structured by Pt/PPy/PS/Au was fabricated through four-step processes. The three-dimensional structure permited liquid alcohol to diffuse into the catalyst layer easier and resulted in large three-phase interface for electrochemical reactions due to the reduction of the liquid sealing effect.Preliminary study on the methanol oxidation indicated that the three-dimensional electrode could give a better electric performance for methanol oxidation than that of conventional electrode at the same catalysts loading.

关 键 词：直接醇类燃料电池 立体电极 聚苯乙烯球 聚吡咯 

分 类 号：TM911.4[电气工程—电力电子与电力传动]