Patent ID: 8318342

Claim:
An all solid-state polymer battery comprising a positive electrode, a negative electrode including a negative electrode active material, and a polymer electrolyte, wherein the polymer electrolyte includes: (1) a solvent component which is at least one ethylene glycol ether selected from the group consisting of methyl monoglyme, methyl diglyme, methyl triglyme, methyl tetraglyme, methyl pentaglyme, ethyl monoglyme, ethyl diglyme, ethyl triglyme, ethyl tetraglyme, ethoxymethoxyethane, and substituted substances thereof having at least one fluorine atom as a substituent; (2) a polymer containing electron-donating oxygen atoms in a skeleton; and (3) a lithium salt, wherein the lithium salt is dissociated to a lithium ion and an anion, the molar ratio of the solvent component to the lithium ion is 3 or less, and the content of the solvent component in the polymer electrolyte is not more than 25.2% by mass.