| 摘要 |
The invention relates to a porous electrode comprising at least a porous catalytic layer containing a catalytically active noble-metal, carbon and a polymeric binder and a porous metallic collector is situated on the electrolyte-side of this layer. According to the invention the catalytic layer has a thickness of less than 80 mu m and are the noble-metal particles in the layer situated on the surface and/or in the pores of part of the carbon particles, while the rest of the carbon particles contains no noble-metal particles. The invention meets the need of an electrode of the type described with a much lower noble-metal content, while the excellent characteristics as regards efficiency, power density and simplicity of manufacture are retained. |
