Patent ID: 8737039

Claim:
An electrochemical generator, comprising: (A) at least one negative electrode; (B) at least one positive electrode; and (C) an electrolytic composition comprising: (i) at least one aprotic polar compound of formula (I): R 1 R 2 NX(Z)R 7 (I); (ii) a salt soluble in said aprotic polar compound and having an anion with a delocalized charge; and (iii) at least one polymer, wherein: X=C or SO; Z=O, NSO 2 NR 3 R 4 or NCN; R 1 and R 2 are the same or different and are C 1-18 alkyl, C 1-18 oxaalkyl, C 1-18 alkylene or C 1-18 oxaalkylene; R 7 is a fluorine atom, R F CH 2 O—, (R F ) 2 CHO—, (R F CH 2 ) 2 N— or R 5 R 6 N—; R 3 to R 6 are the same or different and are C 1-18 alkyl or C 1-18 oxaalkyl; and R F is a fluorine atom, C 1-4 alkyl, C 1-4 oxaalkyl, or C 1-4 azaalkyl, wherein the C 1-4 alkyl, C 1-4 oxaalkyl or C 1-4 azaalkyl are each perfluorinated, with the proviso that if Z=O then R 7 is not NR 5 R 6 .