Effect of water transport in a PEFC at low temperatures operating with dry hydrogen

被引：72

作者：

Sena, DR ^{[1
]}

Ticianelli, EA ^{[1
]}

Paganin, VA ^{[1
]}

Gonzalez, ER ^{[1
]}

机构：

[1] Univ Sao Paulo, Inst Quim, BR-13560970 Sao Carlos, SP, Brazil

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 477卷 / 02期

基金：

巴西圣保罗研究基金会;

关键词：

polymer electrolyte fuel cell; water management; membrane; transport equations;

D O I：

10.1016/S0022-0728(99)00401-5

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work. an experimental study of the polarisation response of a H-2/O-2 PEFC was carried out at low temperatures as a function of the membrane thickness. Results were analysed using a simplified model describing the transport of water in the membrane. It Is seen that the model equations lead to good fittings of experimental current-potential data for polymer electrolyte fuel cells (PEFC) working with dry hydrogen and with Nafion(R) 115 and 117 membranes. For these membranes, limiting effects due to oxygen diffusion are minimal and the water transport through the membrane is a limiting effect for the cell behaviour at high current densities. With the Nafion(R) 112 membrane, oxygen diffusion effects dominate the characteristics of the current-potential curve. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：164 / 170

页数：7

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