Patent ID: 8512899

Claim:
An electrochemical cell comprising an electrolyte, wherein the electrolyte comprises at least in part an ionic conduction material comprising at least one cross-linked polymer obtained by anionic polymerization initiation followed by cationic cross-linking of a monomer of general formula: (A) n Q(Y) p wherein Q represents a bond, —CO—, —SO 2 —, or an organic radical of n+p valence which is non reactive towards reagents initiating anionic or cationic polymerization, said organic radical being selected from alkyl, alkylaryl, arylalkyl, optionally comprising oxa or aza substituents, and comprising from 1 to 30 carbon atoms; A is selected from the group consisting of: Y is selected from the group consisting of: and said Y is non-reactive toward reagents initiating anionic polymerization Z represents O or CH 2 ; R represents H, an alkyl or oxa-alkyl radical of from 1 to 12 carbon atoms, CN or CH 2 COOR 1 wherein R 1 is H or an alkyl or oxa-alkyl radical of 1 to 12 carbon atoms; R′ represents H or an alkyl radical of 1 to 12 carbon atoms; r varies between 1 and 6; n varies between 1 and 3; and p varies between 1 and 6; and at least one salt M n+ X − n , wherein M n+ is an inorganic, organic, or organometallic cation of charge n, and X − is a monovalent anion, and wherein two or more anions X − can be linked together with covalent chains or chains belonging to a polymer chain.