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US 4,358,475 AGranted
Method of preparing active electrodes
AssigneeThe British Petroleum Company p.l.c.
InventorsDavid E. Brown, Mahmood N. Mahmood
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AssigneeThe British Petroleum Company p.l.c.
InventorsDavid E. Brown, Mahmood N. Mahmood
Estimating the term…
This invention relates to a method of producing metal electrodes by treating a metal electrode substrate so as to coat the substrate surface with a homogeneous solution of the compounds of (i) at least one metal selected from a first group of iron, cobalt, nickel and manganese (ii) at least one other metal selected from a second group of molybdenum, tungsten and vanadium, each of which compound is capable of thermal decomposition to the corresponding metal oxide. The coated substrate is then thermally decomposed and the oxide-coated substrate is cured in a reducing atmosphere at elevated temperature. Substrates coated with Ni-Mo oxides are preferred. The electrodes thus produced exhibit very low overvoltage, are of high stability with respect to their activity and can be used as cathodes for the electrolysis of water or brine.
A method of producing metal electrodes comprising treating a metal electrode substrate so as to coat the substrate surface with a homogeneous solution of the compounds of (i) at least one metal selected from a first group of iron, cobalt, nickel and manganese (ii) at least one other metal selected from a second group of molybdenum, tungsten and vanadium, each of which compound, when not an oxide, is capable of thermal decomposition to the corresponding metal oxide, thermally decomposing the metal compounds, other than the oxides, on the substrate to the corresponding oxides or mixed oxides and curing the oxide-coated substrate in a reducing atmosphere at elevated temperature so as to convert at least some of the oxides to a metallic state.
Dependencies are inferred from the claim text.