Gas Diffusion Layer Fabrication with Coating of Carbon Fiber Dispersion

In PEFCs (Polymer Electrolyte Fuel Cells), the gas diffusion layer (GDL) is one of the largest cost factors among the components. In order to reduce manufacturing cost, GDLs fabricated using a coating of carbon fiber dispersion have been developed. The coating dispersion is composed of carbon fibers...

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Bibliographic Details
Published inECS transactions Vol. 64; no. 3; pp. 519 - 526
Main Author Tanuma, Toshihiro
Format Journal Article
LanguageEnglish
Published 01.01.2014
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Summary:In PEFCs (Polymer Electrolyte Fuel Cells), the gas diffusion layer (GDL) is one of the largest cost factors among the components. In order to reduce manufacturing cost, GDLs fabricated using a coating of carbon fiber dispersion have been developed. The coating dispersion is composed of carbon fibers with a diameter of 11 mm, ionomer, and solvents. After coating the slurry, the carbon fiber layer was dried and hot-pressed before using it as a cathode GDL. The performance of a membrane electrode assembly (MEA) employing the dispersion-cast GDL was equal to that using a conventional GDL.
ISSN:1938-5862
1938-6737
DOI:10.1149/06403.0519ecst