Hydrogen-evolution electrode

Details Hydrogen-evolution electrode Hydrogen-evolution electrode

1985-05-06

1986-08-12

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

427 34, 427124, 4271266, C25B 1100

Patent

active

046054847

ABSTRACT:
An improved hydrogen-evolution electrode having thereon a coating containing an oxide of at least one metal selected from nickel and cobalt and further containing a chromium component in a proportion, in terms of atomic percentage, of 0.5 to 20% has been found to exhibit extremely low hydrogen overvoltage and to have not only high catalytic activity but also high durability. Such a hydrogen-evolution electrode can be produced by melt-spraying onto a substrate a mixture of a powder of at least one member selected from the first group consisting of nickel, cobalt, oxides of nickel and cobalt, hydroxides of nickel and cobalt, organic acid salts of nickel and cobalt and inorganic acid salts of nickel and cobalt and a powder of at least one member selected from the second group consisting of chromium, an oxide of chromium, a hydroxide of chromium, an organic acid salt of chromium and an inorganic acid salt of chromium. In the production, when the above-mentioned mixture is subjected to granulation and the obtained granules are melt-sprayed, there can be obtained the desired electrode having excellent properties with respect to catalytic activity and durability in high spraying yield.

REFERENCES:
patent: 3992278 (1976-11-01), Malkin et al.
patent: 4024044 (1977-05-01), Brannan et al.
patent: 4033837 (1977-07-01), Kuo et al.
patent: 4049841 (1977-09-01), Coker
patent: 4080278 (1978-03-01), Ravier et al.
patent: 4243497 (1981-01-01), Nicolas et al.
patent: 4410413 (1983-10-01), Hall
patent: 4422920 (1983-12-01), Stachurski

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