| 摘要 |
PURPOSE:To prevent wasteful use of catalyst metal by forming a catalyst layer with a skeleton formed by dispersing conductive particles on the surface of water repellent resin, and conductive particles coagulated in spaces of the skele ton, and sypporting catalyst metal on conductive particles. CONSTITUTION:In a fuel gas diffusion electrode comprising a catalyst layer and a gas diffusion layer, a catalyst layer consists of a skeleton formed by dispersing conductive particles 2 on the surface of water repellent resin 3, and conductive particles coagulated in spaces of the skeleton, and catalyst metal 1 is supported on conductive particles 5. Thereby, electrolyte penerates into a hydrophilic part and all the catalyst metals participate in the wetting reaction of electrolyte. On the other hand, gas passes through water repellent part and sufficient gas is supplied to the catalyst. |
