Cathode for electrolytic processes

Details Cathode for electrolytic processes Cathode for electrolytic processes

C - Chemistry, Metallurgy

25

B

C25B 11/06 (2006.01) C25B 11/04 (2006.01)

Patent

CA 2756325

The invention relates to a cathode for electrolytic processes with evolution of hydrogen consisting of a metal sub-strate with a noble metal-based activation and two protective layers, one interposed between the activation and the substrate and one external, containing an electroless-depositable alloy an of a metal selected between nickel, cobalt and iron with a non-metal selected between phosphorus and boron, with the optional addition of a transition element selected between tungsten and rhenium.

La présente invention concerne une cathode destinée à des processus électrolytiques avec évolution d'hydrogène, composée d'un substrat métallique présentant une activation à base de métal noble et deux couches de protection, l'une intercalée entre l'activation et le substrat et l'autre située à l'extérieur, qui contient un alliage, pouvant être déposé par dépôt autocatalytique, d'un métal choisi parmi du nickel, du cobalt et du fer avec un élément non-métallique choisi parmi du phosphore et du bore, avec l'ajout facultatif d'un élément de transition choisi parmi du tungstène et du rhénium.

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