Electro-osmotic drag coefficient and proton conductivity in Nafion® membrane for PEMFC

被引：97

作者：

Luo, Zhiping ^{[1
]}

Chang, Zhangyong ^{[1
,2
]}

Zhang, Yuxia ^{[2
]}

Liu, Zhen ^{[1
]}

Li, Jing ^{[1
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Hubei, Peoples R China

[2] Jiujiang Univ, Coll Sci, Jiujiang 332005, Jiangxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 07期

关键词：

Polymer electrolyte membrane; Electro-osmotic drag coefficient; Proton conductivity; Fuel cells; WATER TRANSPORT; DEPENDENCE;

D O I：

10.1016/j.ijhydene.2009.09.013

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：

A new method based on hydrogen pump is presented to measure the electro-osmotic drag coefficient and proton conductivity in Nafion (R) 117 membrane under similar condition to operating PEMFC. For membranes in contact with liquid water on both sides, electro-osmotic drag coefficient and proton conductivity increase with increasing temperature over the range of 20-90 degrees C while keeping water content inside the membrane constant (lambda=22.5) and decrease with decreasing water content in the membrane while keeping temperature of system constant (T = 25 degrees C). On the basis of cluster-network model and transport mechanisms of proton and water in ionomeric membrane, the results are discussed. (C) 2009 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.

引用

页码：3120 / 3124

页数：5

共 12 条

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