Electrolytic membrane for use as a solid polymer electrolyte in a rechargeable battery and process for its photo-crosslinking on a cathodic collector

摘要

Electrolytic membrane for light rechargeable batteries essentially consisting of: 1) polymer deriving from the photopolymerization of a mixture essentially consisting of a vinyl ether having the general formula (I) R-Ä-O-CH2CH2-Ün-O-CH=CH2, and a divinyl ether having the general formula (II) CH2=CH-Ä-O-CH2-CH2-Üm-O-CH=CH2, in a quantity of between 15 and 60% by weight; 2) plasticizer in a quantity of between 35 and 75% by weight; 3) Lithium salt in a quantity of between 5 and 20% by weight; 4) photopolymerization initiator in such a quantity as to photopolymerize (I) and (II); 5) zeolite in a quantity of between 3 and 30% by weight; the percentage sum of components (1) to (5) being equal to 100.