Solid polymer electrolyte

Details Solid polymer electrolyte Solid polymer electrolyte

1997-06-12

1999-04-27

Diamond, Alan

Chemistry: electrical current producing apparatus, product, and

Current producing cell, elements, subcombinations and...

Include electrolyte chemically specified and method

429190, 429191, 252 622, H01M 618

Patent

active

058979743

ABSTRACT:
A miscible blend of two acrylic polymers, one of which contains a poly(1,2 -alkyleneoxy) side chain, with a soluble lithium salt yields a conducting polymer system useful in small rechargeable batteries without the need for volatile polar solvents. By employing one polymer with a glass temperature below 35.degree. C. in conjunction with control of molecular weight of both components, a flexible film may be formed by conventional thermoplastic methods. The conductive salt, preferably LiN(CF.sub.3 SO.sub.2).sub.2), may be incorporated during the polymerization which forms the acrylic polymers.

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