Surface modification for the perfluorosulfonate proton-conducting electrolyte membrane

被引：3
|
作者：
Zhang, Dongfang [1 ]
机构：
[1] Huazhong Agr Univ, Coll Sci, Wuhan 430070, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 07期
关键词：
Surface modification; Perfluorosulfonate proton-conducting; electrolyte membrane; METHANOL FUEL-CELLS; EXCHANGE MEMBRANES; IONOMER MEMBRANES; CROSSOVER; POLYMERS;
D O I：
10.1016/j.apsusc.2008.10.106
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The positively charged ions of palladium particles are obtained by reducing the solution containing metallic ions in the presence of PDDA (poly-diallyldimethylammonium chloride) medium. The nascent palladium particles are dispersed evenly on the surface of the perfluorosulfonate proton-conducting electrolyte membrane and bonded firmly to the activation center of the membrane. The mechanical strength of membrane is greatly enhanced by surface modi. cation. And the methanol diffusion coefficients of the modified membrane are decreased prominently by the deposition of palladium particles on the surface, which serves as a natural barrier for methanol crossing. (C) 2008 Elsevier B. V. All rights reserved.
引用
收藏
页码：4119 / 4122
页数：4
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