期刊
RENEWABLE ENERGY
卷 52, 期 -, 页码 40-45出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2012.10.025
关键词
Contact resistance; Gas diffusion layer; Bipolar plate; Sealing gasket
资金
- Dorothy Hodgkin Postgraduate Award
- UK Engineering and Physical Sciences Research Council (EPSRC)
- Shell UK
The contact resistance between the gas diffusion layer (GDL) and the bipolar plate has been experimentally estimated as they are assembled in proton exchange membrane (PEM) fuel cells. A number of coated and non-coated GDLs, graphite bipolar plates and a sealing gasket were employed to perform the test. The results show that the contact resistance of the non-coated GDLs (or carbon substrates) is highly influenced by the competing effects of the initial thickness of the GDL and the polytetrafluoroethylene (PTFE) loading. As for the coated GDLs, the PTFE loading present in the microporous layer (MPL) was found to play a positive role in establishing a good contact between the GDL and the bipolar plate. (C) 2012 Elsevier Ltd. All rights reserved.
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