期刊
JOURNAL OF POWER SOURCES
卷 195, 期 16, 页码 5312-5319出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2010.03.005
关键词
Proton exchange membrane fuel cells; Composite bipolar plate; Compressed expanded graphite sheets; Vacuum impregnation; Technique optimization
资金
- National High Technology Research and Development Program of China (863 Program) [2006AA11A132, 2008AA11A105]
- National Natural Science Foundations of China [20636060, 20876155, 20936008]
Vacuum resin impregnation method has been used to prepare polymer/compressed expanded graphite (CEG) composite bipolar plates for proton exchange membrane fuel cells (PEMFCs). In this research, three different preparation techniques of the epoxy/CEG composite bipolar plate (Compression-Impregnation method, Impregnation-Compression method and Compression-Impregnation-Compression method) are optimized by the physical properties of the composite bipolar plates. The optimum conditions and the advantages/disadvantages of the different techniques are discussed respectively. Although having different characteristics, bipolar plates obtained by these three techniques can all meet the demands of PEMFC bipolar plates as long as the optimum conditions are selected. The Compression-Impregnation-Compression method is shown to be the optimum method because of the outstanding properties of the bipolar plates. Besides, the cell assembled with these optimum composite bipolar plates shows excellent stability after 200 h durability testing. Therefore the composite prepared by vacuum resin impregnation method is a promising candidate for bipolar plate materials in PEMFCs. (C) 2010 Published by Elsevier B.V.
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