Method of forming gas diffusion layer on carbon paper used in fuel cells and carbon paper having gas diffusion layer formed thereon used in fuel cells
AssigneeHonda Motor Co., Ltd.
InventorShunsuke Konishi
Life of this patent
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Abstract
Provided are a method of forming a gas diffusion layer on carbon paper, the method being capable of balancing smoothness with air permeability and water drainage ability in the gas diffusion layer as an underlayer, as well as the carbon paper having the gas diffusion layer formed thereon used in fuel cells. The method of forming a gas diffusion layer (L2) on carbon paper (CP) used in fuel cells includes the steps of: forming a water-repellent layer (L1) on the surface of the carbon paper (CP), forming a crack (CR) in the water-repellent layer (L1), and forming the gas diffusion layer (L2) on the water-repellent layer (L1) having the crack (CR) formed therein.
Claims3
A method of forming a gas diffusion layer on carbon paper used in fuel cells, the method comprising the steps of:
- forming a water-repellent layer on a surface of the carbon paper;
- forming a crack in the water-repellent layer;
- and
- forming a gas diffusion layer on the water-repellent layer having the crack formed therein.
Carbon paper having a gas diffusion layer formed thereon used in fuel cells, the carbon paper comprising:
- carbon paper;
- a water-repellent layer formed on a surface of the carbon paper;
- and
- a gas diffusion layer formed on the water-repellent layer, wherein
- a crack is formed in the water-repellent layer, and
- a portion of the gas diffusion layer enters the crack in the water-repellent layer so as to cover a portion of the water-repellent layer that forms the crack in the water-repellent layer.
Dependencies are inferred from the claim text.