OXIRANYL-ACYL DERIVATIVES AS ADDITIVES FOR ELECTROLYTES IN LITHIUM ION BATTERIES

摘要

The present invention relates to an electrolyte composition (A) containing (i) at least one aprotic organic solvent; (ii) at least one conducting salt; (iii) at least one compound of formula (I) and (iv) optionally at least one further additive.;

主权项

1: An electrolyte composition (A), comprising
(i) an aprotic organic solvent; (ii) a conducting salt; (iii) a compound of formula (I) wherein X is either carbon, S(O) or P(OR8) n is 0 or 1; R1 is selected from the group consisting of C1-C6 alkyl, C3-C6 (hetero)cycloalkyl, C2-C6 alkenyl, C3-C6 (hetero)cycloalkenyl, C2-C6 alkynyl, C5-C7 (hetero)aryl, and C6-C13 aralkyl, wherein alkyl, (hetero)cycloalkyl, aralkyl, alkenyl, (hetero)cycloalkenyl, alkynyl, and (hetero)aryl optionally substituted by one or more substituents selected from the group consisting of F, CN, C1-C6 alkyl, C3-C6 (hetero)cycloalkyl, C2-C6 alkenyl, C5-C7 (hetero)aryl, OR5, C(O)R5, C(O)OR5, OC(O)R5, OC(O)OR5, OC(O)C(O)OR5, OS(O)2R5, and S(O)2OR5; R2, R3 and R4 are independently selected from the group consisting of H, C1-C6 alkyl, C3-C6 (hetero)cycloalkyl, C2-C6 alkenylC3-C6 (hetero)cycloalkenyl, C2-C6 alkynyl, C5-C7 (hetero)aryl, C6-C13 aralkyl, C(O)R6, C(O)OR6, and S(O)2OR6, wherein alkyl, (hetero)cycloalkyl, aralkyl, alkenyl, (hetero)cycloalkenyl, alkynyl, and (hetero)aryl optionally substituted by one or more substituents selected from the group consisting of F, CN, C1-C6 alkyl, C3-C6 (hetero)cycloalkyl, C2-C6 alkenyl, C5-C7 (hetero)aryl, OR7, C(O)R7, C(O)OR7, OC(O)R7, OC(O)OR7, OC(O)C(O)OR7, OS(O)2R7, and S(O)2OR7; or R2 and R3 are combined with each other and form together with a C—C single bond of the oxirane cycle a 5 to 7 membered hydrocarbon cycle which is substituted by at least one selected from the group consisting of O and oxiranyl, and/or two adjacent C-atoms of the hydrocarbon carbon cycle form together with an O-atom an additional oxirane cycle; R5, R6, R7 and R8 are independently selected from the group consisting of H, C1-C6 alkyl, C3-C6 (hetero)cycloalkyl, C2-C6 alkenyl, C3-C6 (hetero)cycloalkenyl, C2-C6 alkynyl, C5-C7 (hetero)aryl, and C6-C13 aralkyl, wherein alkyl, (hetero)cycloalkyl, aralkyl, alkenyl, (hetero)cycloalkenyl, alkynyl, and (hetero)aryl omionally substituted by one or more substituents selected from the group consisting of F, CN, and oxiranyl; and (iv) optionally an additive.