Cathode for chlor-alkali cells

Patent · Tue Sep 15 04:00:00 EDT 1981

OSTI ID:5852988

Gray, T J

An improved cathode with a conductive metal core and a Raney-type catalytic surface predominantly derived from an adherent ternary aluminide intermetallic crystalline precursory outer portion of the metal core is disclosed. The precursory outer portion preferably has molybdenum and titanium added to give a precursor alloy having the formula NiXMoYTiZAL/sub 3/ where X is within the range of from about 75 to about 94 weight percent, Y is within the range of from about 5 to about 20 weight percent and Z is within the range of from about 1 to about 5 weight percent of the Ni-Mo-Ti portion of the alloy. Also disclosed is a method of producing a low overvoltage cathode. The method includes the steps of taking a Ni-Mo-Ti core or substrate having about 5-20 weight percentage of mo and about 1-5 weight percent Ti and coating it with aluminum then heat treating to form a Ni-Mo-Ti-Al ternary alloy with mostly NiAl/sub 3/ (Ordered orthorhombic) crystal structure and then leaching out the al to produce a ternary NiMoTi alloy Raney surface.

• Assignee: Olin Corp
• Patent Number(s): US 4289650
• OSTI ID: 5852988
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250901* -- Energy Storage-- Batteries-- Design & Development
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ALLOYS
ALUMINIUM
CATHODES
CHEMICAL COMPOSITION
DISSOLUTION
ELECTRODES
ELECTROLYTIC CELLS
ELEMENTS
HIGH TEMPERATURE
HYDROGEN PRODUCTION
LAYERS
LEACHING
METALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
SEPARATION PROCESSES
TITANIUM ALLOYS