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AssigneesUhde GmbH, Gaskatel Gesellschaft FüR Gassysteme Durch Katalys
InventorsRoland Beckmann, Karl-Heinz Dulle, Peter Woltering, Randolf Kiefer, Frank Funck, Wolfram Stolp, Hans-Joachim Kohnke, Joachim Helmke
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The invention relates to a method for the production of a gas diffusion electrode from a silver catalyst on a PTFE-substrate. The pore system of the silver catalyst is filled with a moistening filling agent. A dimensionally stable solid body having a particle size greater than the particle size of the silver catalyst is mixed with the silver catalyst. Said compression-stable mass is formed in a first calendar in order to form a homogenous catalyst band. In a second calendar, an electroconductive discharge material is embossed in the catalyst band, and heating takes places between the first and the second calendar by means of a heating device, wherein at least parts of the moistened filling agent are eliminated. The invention also relates to a gas diffusion electrode which is produced according to said method.
A method for the production of a gas diffusion electrode from a silver catalyst on a PTFE substrate, whereby the pore system of the silver catalyst is filled with a wetting filler material, a dimensionally stable solid object with a grain size that is greater than that of the silver catalyst is mixed with the silver catalyst, this compressible mass is shaped in a first calendering step into a homogeneous catalyst strip, and is impressed in a second calendering step into an electrically conducting discharge material, characterized in that between the first and second calendering steps, heating is performed by means of a heating device, in which at least parts of the wetting filler material are eliminated.
Dependencies are inferred from the claim text.