Battery

Details Battery Battery

1988-12-29

1991-02-26

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

204 21, H01M 404, H01M 1040

Patent

active

049961292

ABSTRACT:
The invention concerns rechargeable lithium batteries and anodes for such batteries and method of making the anodes, and comprises the features: (a) the anode may be of a solution type alloy of commercial purity Al with at least one of Mg, Ga, Ca, Si, Sn, Li, Ge and Zn; (b) alternatively, the anode may be of a wrought eutetic aluminum alloy containing 3-25 volume % of dispersed intermetallic particles of average diameter 0.1 to 2 microns; (c) the anode may have been electrochemically alloyed with Li and pre-treated by being subjected to more than one charge-discharge cycle to improve the initial charge-discharge efficiency of the battery. When used as anodes in rechargeable lithium batteries, the specified alloys show high charge-discharge efficiency. Alloys based on commercial purity Al are easier to cut and shape than are alloys based on super-purity Al.

REFERENCES:
patent: 4116780 (1978-09-01), Sammells
patent: 4126486 (1978-11-01), Morris et al.
patent: 4126489 (1978-11-01), Williams
patent: 4483719 (1984-11-01), Furrer et al.
patent: 4820599 (1989-04-01), Rurukawa et al.
Jasinski, High Energy Batteries, Plenum Press, New York 1967.

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