A solid state ion conducting electrolyte and a battery incorporating same.
The electrolyte includes a polymer matrix with an alkali metal salt
dissolved therein, the salt having an anion with a long or branched chain
having not less than 5 carbon or silicon atoms therein. The polymer is
preferably a polyether and the salt anion is preferably an alkyl or silyl
moiety of from 5 to about 150 carbon/silicon atoms.