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

1981-10-07

1983-10-11

Edmundson, F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204293, C25B 1106

Patent

active

RE0314102

ABSTRACT:
An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent [NiAl.sub.3 ] 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] 95 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 [NiAl.sub.3 ] a Beta Nickel structure and then leaching out the Al to produce a Raney surface.

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