Constant volume lithium battery cell and process

Details Constant volume lithium battery cell and process Constant volume lithium battery cell and process

1984-12-11

1986-05-06

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Plural concentric or single coiled electrode

429 50, 429194, 429218, 296231, H01M 614

Patent

active

045871825

ABSTRACT:
A battery cell and a method for preparing a battery cell are disclosed in which a substantially fixed volume container includes the cell components therein in voltaic relationship, with the cell components including an anode comprising lithium metal, a non-aqueous electrolyte and a cathode in a spatial relationship to the anode within the fixed volume container, wherein the cathode comprises cathode active material which upon discharge intercalates lithium and undergoes a phase transition to a distinct structural phase in which phase the cathode active material can reversibly operate and which phase provides a cathode expansion greater than the anode volume decrease upon discharge, and wherein the spatial relationship and the cathode expansion within the substantially fixed volume are sufficient to produce a compressive load on the anode which inhibits the formation of a porous deposit of exterior, irregularly oriented, amalgamated lithium grains on the anode when the cell is reversibly operated with the cathode in said phase.

REFERENCES:
patent: 4129686 (1978-12-01), Kaduboski
patent: 4224390 (1980-09-01), Haering et al.
patent: 4379815 (1983-04-01), Bubnick
patent: 4384029 (1983-05-01), Kordesch et al.

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