Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1983-11-30
1985-06-11
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429199, 429212, 429218, H01M 1040
Patent
active
045229015
ABSTRACT:
Secondary batteries with conjugated polymer anodes, such as polyacetylene, contain an electrolyte including a salt of the formula MB.sub.4-w-y-z R'.sub.w R".sub.y X.sub.z wherein M is an alkali metal, B is boron, R is alkyl, R' is aryl or alkyl-substituted aryl, R" is heterocycle, X is F, Cl, Br, I, CN, OCN, SCN, fluoroaryl or perfluoroalkyl-substituted aryl, w and y are integers of 0 to 4, and z is an integer of 0 to 4, provided that when X is solely F, Cl, I, Br, CN, OCN, SCN or perfluororalkyl, Z is not 4; with the sum x+y+z being equal to or less than 4. Exemplary salts are LiBMe.sub.4, LiBMe.sub.2 Ph.sub.2, LiBMe.sub.2 PhPy, LiBMe.sub.2 P.sub.y 2 and KBPh.sub.3 SCN (where M=methyl, Ph=phenyl and Py=pyrrolyl). Cathodes such as conjugated backbone polymers (e.g. polyacetylene) and transition-metal chalcogenides (e.g. TiS.sub.2) are disclosed. The battery can be charged to a state wherein the anode is in a reduced state of 0.1 V-0.5 V (relative to M/M.sup.+) where a voltage plateau exists in some instances.
REFERENCES:
patent: 4060674 (1977-11-01), Klemann et al.
patent: 4104451 (1978-08-01), Klemann et al.
patent: 4139681 (1979-02-01), Klemann et al.
patent: 4279976 (1981-07-01), Klemann et al.
patent: 4321114 (1982-03-01), MacDiarmid et al.
Allied Corporation
Doernberg Alan M.
Skapars Anthony
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