METHOD FOR PRODUCING AN ELECTRODE

The invention relates to a method for producing an electrode for use in the alkaline electrolysis of water, the electrode comprising a planarly extending section of a flat metal material to which a layer of particles of an electrochemically active metal alloy is applied, the method including the fol...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GRAUVOGL, Manfred, SCHREIBER, Arndt, PUCHER, Klaus, SCHRAMM, Leander, SCHUBERT, Werner
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS APPARATUS THEREFOR CASTING CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS POWDER METALLURGY SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS WELDING WORKING BY LASER BEAM WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	The invention relates to a method for producing an electrode for use in the alkaline electrolysis of water, the electrode comprising a planarly extending section of a flat metal material to which a layer of particles of an electrochemically active metal alloy is applied, the method including the following steps: provision of a planarly extending section of a flat metal material in the form of an expanded metal grid, wire mesh or wire knitted fabric, metallic nonwoven or metallic foam or perforated sheet, each made of nickel or a nickel alloy or nickel-plated metal, pulsed mechanical blasting of the planarly extending section on both sides for cleaning and preparation for a coating, provision of a powder mixture of nickel powder and aluminum(40-50)-nickel(35-40)-molybdenum(15-20) alloy powder, the proportion of nickel powder being 5-25% by weight of the powder mixture, coating of the mechanically blasted section on both sides with the powder mixture by thermal spraying or by laser cladding to obtain a coating on both sides, temperature control of the coated section at temperatures in the range between 250°C and 650°C in a non-reductive nitrogen or argon atmosphere for a period of 10 - minutes to form aluminum-nickel phases.