SOLID POLYMER ELECTROLYTE
The invention relates to a polymer composition comprising: a) a thermoplastic copolyester comprising i. polyester hard segments in an amount of between 5 and 50 wt.%, with respect to the total weight of the polymer composition, and ii. soft segments having a number average molecular weight of between 2.000 and 10.000 g/mol; and b) a metal salt; and c) an organic nitrile component, and wherein the metal salt is present in a weight percentage between 10 to 80 wt.%, the organic nitrile component is present in a weight percentage between 10 and 80 wt.%, and the soft segment is present in a weight percentage between 10 and 80 wt.%, wherein the weight percentages are with respect to the total weight of metal salt, organic nitrile component and soft segment; as well as a battery comprising the polymer composition.