Cathode electrode for an electrical device and method of making

Details Cathode electrode for an electrical device and method of making Cathode electrode for an electrical device and method of making

1983-09-19

1984-08-21

Morgenstern, Norman

Metal treatment

Compositions

Heat treating

427 80, 427125, 427405, H01G 900

Patent

active

044668414

ABSTRACT:
A cathode electrode of copper-based material adapted for use in an electrical device is provided with a deposit of silver coated with a finely divided electrically conductive material such as graphite palladium or platinum. The silver deposit is formed by reacting a dilute solution of sodium-silver cyanide with the copper-based cathode electrode. When utilized in an electrolytic capacitor, the cathode electrode helps to increase the capacitance of the cathode electrode and the contact of the copper-based material to an acid electrolyte is uniformly distributed over a large area to provide extended operation with high ripple current with deep cycles of charge and discharge.

REFERENCES:
patent: 3523220 (1970-08-01), Harding
patent: 3531693 (1970-09-01), Buice
patent: 3548265 (1970-12-01), Buice et al.
patent: 3628103 (1971-12-01), Booe
patent: 4016465 (1977-04-01), Walters
patent: 4020401 (1977-04-01), Cannon et al.
patent: 4159509 (1979-06-01), Walters

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