Dense anodes of lithium alloys for all solid batteries

Details Dense anodes of lithium alloys for all solid batteries Dense anodes of lithium alloys for all solid batteries

1986-12-04

1988-12-27

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Electrode

429218, 429191, 2521821, H01M 402

Patent

active

047940603

ABSTRACT:
The disclosure describes an anode made of a thin metallic foil in discharged condition which is converted into a dense metallic alloy of an alkali metal during the first charge. The disclosure also describes an electrochemical rechargeable battery in discharged condition. The latter comprises an anode made of a thin metallic foil, such as aluminum, magnesium or tin, an electrolyte, for example a polymeric electrolyte, as well as a cathode based on an oxide, a sulfide or an halide, prepared in discharged condition and constituting a source of alkali metal preferably lithium. The cathode should be capable of freeing the alkali metal under a charge so that the latter is introduced into the metallic foil to form an alloy of the alkali metal and of at least a portion of the metal consitituting the metallic sheet. To obtain the charged batery, it is merely sufficient to apply a charge during a certain period of time while the anode is being transformed into an alloy. Substantially improved properties during cycling.

REFERENCES:
patent: 4495258 (1985-01-01), Mehaute et al.
patent: 4517265 (1985-05-01), Belanger et al.
patent: 4587182 (1986-05-01), Stiles et al.
patent: 4589197 (1986-05-01), North

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