期刊
JOURNAL OF POWER SOURCES
卷 288, 期 -, 页码 288-295出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2015.04.102
关键词
Silicon carbide; High temperature PEMFC; Microporous layer; PBI; Electrodes
资金
- Seventh Framework Programme through the project CISTEM (FCH-JU) [325262]
This work reports the evaluation of Silicon Carbide (SiC) for its application in microporous layers (MPL) of HT-PEMFC electrodes and compares results with those obtained using conventional MPL based on Vulcan XC72. Influence of the support load on the MPL prepared with SiC was evaluated, and the MPL were characterized by XRD, Hg porosimetry and cyclic voltammetries. In addition, a short lifetest was carried out to evaluate performance in accelerated stress conditions. Results demonstrate that SiC is a promising alternative to carbonaceous materials because of its higher electrochemical and thermal stability and the positive effect on mass transfer associated to its different pore size distribution. Ohmic resistance is the most significant challenge to be overcome in further studies. (c) 2015 Elsevier B.V. All rights reserved.
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