Electrode for fuel cell and process for the preparation thereof
First Claim
1. A process for the preparation of an electrode for fuel cell, which comprises:
- preparing an electrode comprising a catalyst layer and a gas diffusion layer;
mixing a polymer, its solvent and an electro-conductive filler to obtain a mixture thereof; and
subjecting said mixture to phase separation of said polymer and said solvent to form said gas diffusion layer comprising porous polymer containing said electro-conductive filler.
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Accused Products
Abstract
The present invention provides an electrode for fuel cell comprising a gas diffusion layer comprising porous polymer containing an electro-conductive filler and a catalyst layer containing a particulate catalyst. In this structure, a gas diffusion layer is formed by a porous polymer containing an electro-conductive filler. In this arrangement, the gas diffusion layer can be easily kept in face contact with the interface with the catalyst layer to increase the contact area of the gas diffusion layer with the catalyst layer. Thus, the number of catalyst particles taking part in the transfer of electron, making it possible to raise the output of the fuel cell.
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Citations
20 Claims
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1. A process for the preparation of an electrode for fuel cell, which comprises:
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preparing an electrode comprising a catalyst layer and a gas diffusion layer;
mixing a polymer, its solvent and an electro-conductive filler to obtain a mixture thereof; and
subjecting said mixture to phase separation of said polymer and said solvent to form said gas diffusion layer comprising porous polymer containing said electro-conductive filler. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification