Compsns. for polymeric electrolyte prodn. - comprising radiation polymerisable cpd., ionically conducting liq. and alkali metal salt

Compsns. (I) for prodn. of polymeric electrolytes comprise a radiation-polymerisable liq. monomer or prepolymer (II), a radiation-inert ionically conducting liq. (III) and an ionisable alkali metal salt (IV) Also claimed is the prodn. of polymeric electrolytes by exposing (I) to actinic radiation, and the prodn. of anode and cathode half elements and solid-state electrochemical cells. - Pref. (II) is a polyethylenically unsatd. cpd. contg. at least one heteroatom, esp. a polyethylene glycol di(meth)acrylate, or a polyethylene glycol diglycidyl ether. (III) is a polar aprotic solvent esp. a polyethylene glycol dimethy ether. (IV) is of formula MX, where M=Li, Na, K or NH4 and X=I, Br, SCN, ClO4, CF3SO3, BF4, PF6, CF3COO or AsF6. The actinic radiation is UV or electron beam radiation. (I) contain at least 45 (pref.) at least 70) wt.% (III). - Anode half elements are produced by coating an anodic metal foil with (I) and irradiating. Cathode half elements are produced by coating a metal foil with a compsn. (Ia) comprising (II), (III), an active cathode material (V) and an electronic conductor, and irradiating (V) is pref. an intercalation cpd., esp. a V oxide.(0/0)