Raney alloy coated cathode for chlor-alkali cells

Details Raney alloy coated cathode for chlor-alkali cells Raney alloy coated cathode for chlor-alkali cells

1981-11-09

1983-09-20

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C25B 1104

Patent

active

044054343

ABSTRACT:
An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent Beta Nickel (NiAl.sub.3) crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum added to give a precursor alloy having the formula Ni.sub.x Mo.sub.1-x Al.sub.3 where x is within the range of from about 5 to about 15 weight percent. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo core or substrate having about 5-20 weight percentage of Mo and coating it with aluminum then heat treating to form a Ni-Mo-Al alloy with mostly a Beta Nickel structure and then leaching out the Al to produce a Raney surface.

REFERENCES:
patent: 3674710 (1972-07-01), Richter
patent: 4043946 (1977-08-01), Sanker
patent: 4049580 (1977-09-01), Oden
patent: 4116804 (1978-09-01), Needes
patent: 4162204 (1979-07-01), Kuo
patent: 4248679 (1981-02-01), Welch et al.
Yasummura et al., Ind. Eng. Chem. Prod. Res. Develop., vol. 1, No. 3 (1972), pp. 290-293.

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