Electricite De France - Service National

Electricite De France

Paul Baudry

Stéphane Lascaud

St&eacute;phane Lascaud

Sami Bayoud

Leonard Reibel

Herve Majestre

Philippe Gramain

A solid polymer electrolyte comprises a matrix formed, at least partially, (a) of crosslinked polymer comprising units derived from ethylene oxide and units derived from ethylene oxide substituted with a reactive radical by substitution, at least part of which participates in a crosslinking bond, and (b) of at least an inonizable alkaline salt chelated in said matrix. In addition, a multilayer electrochemical assembly ( ) comprises a positive electrode ( ) and a current collector ( ) of the negative electrode ( ) and optionally of its current collector ( ), the electrodes being separated by a solid polymer electrolyte ( ), as previously described.

Solid polymer electrolyte and multilayer electrochemical assembly comprising such a solid polymer electrolyte

The invention relates to ionically conductive materials including at least one compound corresponding to the following formula (I): ##STR1## in which the groups X and X' are identical or different and denote at least one electrophilic group in an ortho, meta and/or para position and M denotes an alkali or alkaline-earth metal, in solution in a solvent including a macromolecular material or a polar aprotic solvent or solvent mixture. The electrophilic groups X, X' may be chosen from nitro, C.sub.1 -C.sub.5 perfluoroalkyl, CN, halogen, vinyl, CO.sub.2 R and SO.sub.2 R groups where R denotes a C.sub.1 -C.sub.5 linear or branched alkyl radical and the metal M may be chosen from lithium, sodium, potassium, caesium, magnesium, calcium and barium. The invention also relates to a process for the preparation of the abovementioned compounds. The invention applies more particularly to the manufacture of electrochemical generators including an electrolyte based, at least partially, on these ionically conductive materials.

Ionically conductive materials including bis(phenylsulphonyl) imides

Growing community of inventors

Veneux les Sablons, France

Paul Baudry