Solid polymer electrolytes, cells using the same, and solid-state electric double layer capacitors, and methods for their preparation

摘要

The present invention relates to (a) from at least one compound containing a structure derived from a polyhydric alcohol having three or more hydroxyl groups, wherein at least two hydrogen atoms in the alcoholic hydroxyl group are substituted by a unit of formula (1) Polymers obtainable; And;(b) a solid polymer electrolyte comprising a complex of one or more electrolyte salts:;CH ₂ ═C (R ¹ ) C (═O) [O (CH ₂ ) _x (CH (CH ₃ )) _y ] _z NHC (═O) OR ² − (1);;In the above formula,;R ¹ is hydrogen or a methyl group;;R ² is a divalent organic group containing one or more oxyalkylene groups, which may be linear, branched or cyclic and contain one or more atoms different from carbon, hydrogen and oxygen,;x and y are each 0 or a number from 1 to 5;;z is 0 or a value from 1 to 10.;Solid polymer electrolytes, in addition to good film strength and processability, have high ionic conductivity and are useful for making thin electrodes, batteries and electric double layer capacitors that do not suffer from the problem of lack of solution.