| abstract |
The present invention relates to an electrolyte composition comprising one or more compounds of the general formula: (I) In this formula, R 1 is selected from C 1 -C 10 alkyl, R 2 is O (C 1 -C 10 alkyl), OC (O) (C 1 -C 10 alkyl), OC (O) O ( C 1 -C 10 alkyl), OS (O) 2 ( C 1 -C 10 alkyl) and S (O) 2 O (C 1 -C 10 alkyl) C 1 -C 10 alkyl may be substituted with one or more F, and one or more CH 2 groups of C 1 -C 10 alkyl not directly bonded to O may be replaced by O. |