期刊
ELECTROCHIMICA ACTA
卷 56, 期 3, 页码 1670-1675出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.06.043
关键词
PEM fuel cell; Porous media; Gas diffusion media; In-plane thermal conductivity; Experimental measurement
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Auto21 NCE
Gas diffusion media used in polymer electrolyte membrane (PEM) fuel cells are highly anisotropic with significantly different transport property values in the through- and in-plane directions. In this study, experimental measurements of the in-plane effective thermal conductivity k for gas diffusion media used in PEM fuel cells have been carried out using a parallel thermal conductance technique. Conductivity values are measured at a mean sample temperature of 70 degrees C for six different material types and two different orientations in order to quantify the effect of PTFE content on thermal conductivity and to reveal any anisotropic behavior. The results vary from a minimum of k = 3.54 W/(m degrees C) to a maximum value of 15.1 W/(m degrees C) for various samples and configurations tested in this study, with an uncertainty between 1% and 2% for all the cases investigated. (C) 2010 Elsevier Ltd. All rights reserved.
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