期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 34, 期 23, 页码 9461-9478出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2009.09.017
关键词
PEMFC; Water balance; Water transport; Flooding
资金
- NRC-Helmholtz joint Research program
- NRC-MOST joint Research Program
- BCIC's ICSD Program
Water balance has been proven to be critical not only for the performance but also for the durability of proton exchange membrane fuel cells (PEMFCs). This paper reviews experimental investigations and modeling works on water transport and balance in different constituents of the membrane electrode assembly (MEA), which is the most important component determining the performance and durability of a PEMFC. Major water transport mechanisms in the membrane and porous layers of MEA are summarized and the strategies to balance water in these components are also discussed However, the experimental water transport data for different components under varied operating conditions are still insufficient and the understanding of transport mechanisms is still limited To obtain better water management in PEMFCs, the design of the key components requires refinements For future investigations more attention should be paid to the fundamental understanding and systematic data of water transport in each component of the MEA under varied operating conditions Crown Copyright (C) 2009 Published by Elsevier Ltd on behalf of Professor T Nejat Veziroglu All rights reserved.
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