Polymers obtained from monomers allowing a sequential polymerization, and their use for preparing ionic conductors

An electrical energy storage system of the primary or secondary generator type, or super-capacity, comprising at least one negative electrode and at least one positive electrode comprising 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)nQ(Y)p
• wherein
• Q represents a bond, —CO—, —SO2—, 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 agents initiating anionic polymerization;
• Z represents O or CH2;
• R represents H, an alkyl or oxa-alkyl radical of from 1 to 12 carbon atoms, CN or CH2COOR1 wherein R1 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 Mn+X−n;
• wherein
• Mn+ 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.