Gas diffusion layer

H - Electricity – 01 – M

Patent

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Details

H01M 8/02 (2006.01) H01M 8/04 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2728977

The invention relates to a carbon-fiber-based gas diffusion layer (GDL) for use in polymer electrolyte membrane (PEM) fuel cells (FC) having structured hydrophilic properties, wherein materials with hydrophilic properties and selected from the group of metal oxides in an average domain size of 0.5 to 80 µm are present as hydrophilic wicks in the gas diffusion layer.

L'invention concerne une couche de diffusion gazeuse (GDL pour Gas Diffusion Layer) à base de fibres de carbone qui est utilisée dans des piles à combustible à membrane électrolyte polymère (PEM) offrant une hydrophilie structurée. Des matériaux à propriétés hydrophiles sont choisis dans le groupe des oxydes métalliques ayant une granulométrie moyenne de 0,5 à 80 µm et sont placés comme mèches hydrophiles dans la couche de diffusion gazeuse.

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