Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Include electrolyte chemically specified and method
Patent
1993-03-05
1994-03-22
Maples, John S.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Include electrolyte chemically specified and method
429194, H01M 618
Patent
active
052963187
ABSTRACT:
A rechargeable battery comprises lithium intercalation compound electrodes and an interposed electrolyte of flexible polymer containing a lithium salt dissolved in a polymer-compatible solvent. Preferred components include tertiary lithium manganese oxide compound positive electrodes, carbon negative electrodes, and poly(vinylidene fluoride) copolymer electrolyte layers containing about 20 to 70% of a solution of lithium salt in a medium boiling solvent comprising such solvents as ethylene carbonate, propylene carbonate, and dimethyl carbonate. The electrolyte layers may be employed in the form of individual separator films or as a coated component of multilayer battery structures to provide electrical ionic conductivity up to about 10.sup.-3 S/cm.
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G. Feuillade et al., "Ion-conductive macromolecular gels and membranes for solid lithium cells", Journal of Applied Electrochemistry 5 (1975) pp. 63-69.
E. Tsuchida et al., "Conduction of Lithium Ions in Polyvinylidene Fluoride and Its Derivatives-I", Electrochemica Acta, vol. 28, No. 5, pp. 591-595, (1983).
E. Tsuchida et al. "A mechanism of Ionic Conduction of Poly (Vinylidene Fluoride)-Lithium Perchlorate Hybrid Films", Electrochemica Acta, vol. 28, No. 6, pp. 833-837, (1983).
Gozdz Antoni S.
Schmutz Caroline N.
Tarascon Jean-Marie
Bell Communications Research Inc.
Maples John S.
Suchyta Leonard Charles
White Lionel N.
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