Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1980-01-22
1981-02-17
Edmundson, F. C.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204292, 204293, 427123, 427336, 4273768, 427377, 429 44, 429 45, C25B 1106, B05D 512, H01M 498
Patent
active
042513448
ABSTRACT:
An improved electrode having a surface mixture of nickel and porous nickel produced by applying a paste mixture of NiAl.sub.2 and Ni.sub.3 B together with a vehicle to a substrate. After burning off the vehicle and firing in air at a temperature of 450.degree. to 650.degree. C. and thereafter sintering at a temperature of 800.degree. to 900.degree. C. in nitrogen, the coating on the substrate contains Ni.sub.2 Al.sub.3, NiAl.sub.2 B and nickel together with a thin overlayer of B.sub.2 O.sub.3. After removing the intermetallic aluminum, boron and boron oxide by dissolution with sodium hydroxide, the surface of the substrate contains Raney nickel supported on a structure of nickel. The resulting electrodes can be used as cathodes in water or brine electrolysis cells.
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E. I. Du Pont de Nemours and Company
Edmundson F. C.
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