| abstract |
The present invention relates to a process for preparing a solid polymeric electrolyte film, comprising at least the steps of: (i) have a composition comprising, in one or more solvent (s), at least one (co) polymer of at least one cyclic monomer chosen from lactones and cyclic carbonates of five to eight members; said (co) polymer (s) having free terminal hydroxyl functions; at least one crosslinking agent, at least one ionically conductive salt, in particular a lithium salt; and optionally, in the case of a crosslinking agent carrying at least one photosensitive reactive function, at least one photoinitiator compound; (ii) forming a dry film from said composition, under conditions not conducive to the crosslinking of said (co) polymer (s); and (iii) carrying said film under conditions favorable to the crosslinking of said (co) polymer (s) to form the film of solid polymeric electrolyte.n n n It also relates to the solid polymeric electrolyte film thus obtained; and its use in an electrochemical system, in particular in a lithium battery. |