Lithium (n-carbonyl)sulfonamide compound, additive for lithium secondary battery, non-aqueous electrolyte for lithium secondary battery, lithium secondary battery precursor, lithium secondary battery, and method for producing lithium secondary battery

An additive for a lithium secondary battery, comprising a lithium (N-carbonyl)sulfonamide compound (I) represented by the following Formula (I):

• wherein, in Formula (I):
• each of R1 and R2 represents an alkyl group having from 1 to 10 carbon atoms, wherein at least one hydrogen atom of the alkyl group is optionally substituted with a halogen atom, an alkenyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkenyl group is optionally substituted with a halogen atom, an alkynyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkynyl group is optionally substituted with a halogen atom, or an aryl group, wherein at least one hydrogen atom of the aryl group is optionally substituted with a halogen atom, an alkoxy group having from 1 to 6 carbon atoms, or an alkyl group having from 1 to 6 carbon atoms, and both of R1 and R2 are not a trifluoromethyl group;
• L1 and L2 each represent a single bond or —O—.

An additive for a lithium secondary battery comprising a lithium (N-carbonyl)sulfonamide compound (I) represented by the following Formula (I):

• wherein, in Formula (I):
• each of R1 and R2 represents an alkyl group having from 1 to 10 carbon atoms, wherein at least one hydrogen atom of this alkyl group is optionally substituted with a halogen atom, an alkenyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkenyl group is optionally substituted with a halogen atom, an alkynyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkynyl group is optionally substituted with a halogen atom, an aryl group, wherein at least one hydrogen atom of the aryl group is optionally substituted with a halogen atom, an aralkyl group having from 7 to 16 carbon atoms, wherein at least one hydrogen atom of an aromatic ring in the aralkyl group is optionally substituted with a halogen atom, an alkoxy group having from 1 to 6 carbon atoms, or an alkyl group having from 1 to 6 carbon atoms, or R1 and R2 represent a halogen atoms, and
• a case in which R1 is a halogen atom and L1 is —O—, a case in which R2 is a halogen atom and L2 is —O—, and a case in which R1 and R2 are both the alkyl groups or the aryl groups, and L1 and L2 are both single bonds, are excluded.

A nonaqueous electrolyte solution for a lithium secondary battery, the solution comprising a lithium (N-carbonyl)sulfonamide compound (I) represented by the following Formula (I):

• wherein, in Formula (I):
• each of R1 and R2 represents an alkyl group having from 1 to 10 carbon atoms, wherein at least one hydrogen atom of the alkyl group is optionally substituted with a halogen atom, an alkenyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkenyl group is optionally substituted with a halogen atom, an alkynyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkynyl group is optionally substituted with a halogen atom, or an aryl group, wherein at least one hydrogen atom of the aryl group is optionally substituted with a halogen atom, an alkoxy group having from 1 to 6 carbon atoms or an alkyl group having from 1 to 6 carbon atoms, and both of R1 and R2 are not a trifluoromethyl group;
• L1 and L2 each represent a single bond or —O—.

A nonaqueous electrolyte solution for a lithium secondary battery, the solution comprising a lithium (N-carbonyl)sulfonamide compound (I) represented by the following Formula (I):

• wherein, in Formula (I):
• R1 and R2 each represent, an alkyl group having from 1 to 10 carbon atoms, wherein at least one hydrogen atom of this alkyl group is optionally substituted with a halogen atom, an alkenyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkenyl group is optionally substituted with a halogen atom, an alkynyl group having from 2 to 10 carbon atoms, wherein at least one hydrogen atom of the alkynyl group is optionally substituted with a halogen atom, an aryl group, wherein at least one hydrogen atom of the aryl group is optionally substituted with a halogen atom, an aralkyl group having from 7 to 16 carbon atoms, wherein at least one hydrogen atom of an aromatic ring in the aralkyl group is optionally substituted with a halogen atom, an alkoxy group having from 1 to 6 carbon atoms, or an alkyl group having from 1 to 6 carbon atoms, or R1 and R2 represent a halogen atoms, and
• a case in which R1 is a halogen atom and L1 is —O—, a case in which R2 is a halogen atom and L2 is —O—, and a case in which R1 and R2 are both the alkyl groups or the aryl groups, and L1 and L2 are both single bonds, are excluded.