Positive electrode for electrical energy storage device

Details Positive electrode for electrical energy storage device Positive electrode for electrical energy storage device

1979-04-12

1980-10-14

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Deferred action type

Responsive to heat

429163, H01M 620

Patent

active

042282241

ABSTRACT:
The rechargeable electrical energy storage device including spaced-apart negative electrode and positive electrode structures immersed in an electrolyte which is molten at the operating temperature of the device wherein the positive electrode structure comprises a housing for containing a body of electropositive active material, said housing having at least one open face, an electrolyte permeable member affixed to the housing and covering said open face for retaining said active material in said housing and said housing and electrolyte permeable member comprising material selected from the group consisting of steel, nickel, copper and alloys thereof having at least an 8 .mu.m thick electroless nickel coating thereon. In accordance with the present invention it has been found that such an electroless nickel coating permits the use of relatively inexpensive conductive materials such as steel, nickel, copper and alloys thereof and provides the corrosion resistance required in the molten electrolyte. The present invention is particularly applicable to electrical energy storage devices which utilize a transition metal chalcogenide as a positive electrode active material and a lithium alloy as the negative electrode active material.

REFERENCES:
patent: 3887732 (1975-06-01), Parker et al.
patent: 3898096 (1975-08-01), Heredy et al.
patent: 3992222 (1976-11-01), Walsh et al.
patent: 4063968 (1977-12-01), Matsushima et al.
patent: 4076905 (1978-02-01), Sammells
patent: 4143213 (1979-03-01), Jacobson et al.

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