Nafion-Nafion/polyvinylidene fluoride-Nation laminated polymer membrane for direct methanol fuel cells

被引：55

作者：

Kim, HJ ^{[1
]}

Shul, YG ^{[1
]}

Han, HS ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem Engn, Seoul 120749, South Korea

来源：

JOURNAL OF POWER SOURCES | 2004年 / 135卷 / 1-2期

基金：

新加坡国家研究基金会;

关键词：

polymer electrolyte; polyvinylidene fluoride; direct methanol fuel cell; conductivity; membrane; cross-over;

D O I：

10.1016/j.jpowsour.2004.04.001

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 laminated composite polymer electrolyte membrane is prepared as a sandwich structure, i.e., Nafion-Nafion/polyvinylene difluoride (PVdF)-Nafion. The conductivity of the laminated membrane is 1.1 x 10(-2) S cm(-1). The middle layer of PVdF/Nafion successfully blocks methanol cross-over. In tests in a direct methanol fuel cell (DMFC), all of the Nafion-Nafion/PVdF-Nafion membranes give higher power densities than with a Nafion membrane. The highest current density using a blend membrane with 20% PVdF at a constant cell voltage of 0.3 V is 217.64 mA cm(-2) at 110degreesC. It is noteworthy that the Nafion-Nafion/PVdF-Nafion laminated membrane sustains high performance at temperatures above 130degreesC, whereas the performance of a Nation membrane is drastically decreased. (C) 2004 Published by Elsevier B.V.

引用

页码：66 / 71

页数：6

共 10 条

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