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AssigneeElectrochemische Energieconversie N.V.
InventorsAlain P. O. Blanchart, Gilbert J. L. Van Bogaert, Constantine W. M. V. A. De Brandt, Gustaaf J. F. Spaepen
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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.
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, which is situated on the electrode-side of the porous catalytic layer, wherein the catalytic layer has a thickness of less than 80 .mu.m and a catalytically active noble-metal content of at most about 250 .mu.g/cm.sup.2, and wherein the noble-metal particles in the layer are situated on the surface and/or in the pores of part of the carbon particles, while the rest of the carbon particles contain no noble-metal particles.
An electrochemical cell employing at least one electrode comprised of a porous catalytic layer containing a catalytically active noble-metal, carbon and a polymeric binder and a porous metallic collector, which is situated on the electrolyte-side of the porous catalytic layer wherein, the catalytic layer has a thickness of less than 80 .mu.m and a catalytically active noble-metal content of at most about 250 .mu.g/cm.sup.2, and wherein the noble-metal particles in the layer are situated on the surface and/or in the pores of part of the carbon particles, while the rest of the carbon particles contain no noble-metal particles.
Dependencies are inferred from the claim text.