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|1. (WO2018181369) NONAQUEOUS ELECTROLYTE SOLUTION FOR BATTERIES, AND LITHIUM SECONDARY BATTERY|
|Applicants:||MITSUI CHEMICALS, INC.
|Title:||NONAQUEOUS ELECTROLYTE SOLUTION FOR BATTERIES, AND LITHIUM SECONDARY BATTERY|
A nonaqueous electrolyte solution for batteries, which contains additive A that is a compound (A), additive B that is at least one substance selected from the group consisting of lithium monofluorophosphate and lithium difluorophosphate, additive C that is a compound (C), and an electrolyte that is a lithium salt other than additive A, additive B and additive B. In the formulae, R1 represents a C1-6 hydrocarbon group that is substituted by F, a C1-6 hydrocarbon oxy group that is substituted by F, or F; M represents B or P; X represents a halogen; R represents a C1-10 alkylene group, a C1-10 haloalkylene group, a C6-20 arylene group or a C6-20 haloarylene group (and R may contain a substituent or a heteroatom in the structure); m represents a number of 1-3; n represents a number of 0-4; and q represents 0 or 1.