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US 4,363,707 AGranted
Activated nickel-containing electrode and its use particularly for water electrolysis
AssigneeInstitut Francais du Petrole
InventorsMichel Prigent, Lucien Martin
Life of this patent
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Abstract
A low polarization electrode which is stable and safe to use, is manufactured by forming a layer of divided nickel or nickel alloy on an electricity-conducting substrate and thereafter sulfiding the surface of the resultant material. For example, a Raney nickel alloy is deposited on the substrate, the alloy metal is removed and the resultant material is sulfided.
Claims9
A safe, stable low polarization electrode, produced by the process comprising the steps of:
- (a) sulfiding a layer of divided metallic nickel or nickel-containing metal alloy consisting essentially of nickel and 0-80% by weight of Fe, Co, Cr or Mn and/or 0-15% by weight of Mg, Al, Si, Ti, V, Cu, Zn, Zr, Nb, Mo, Sn, La, Ta, W, Pb or Bi, with respect to the nickel, said layer being previously deposited on an electrically conductive substrate, under conditions producing substantially only superficial sulfur deposition;
- and thereafter
- (b) heating the resultant superficially sulfided electrode at 200.degree.-600.degree. C. in an inert gas atmosphere or in a vacuum.
Dependencies are inferred from the claim text.