Nonaqueous electrolytic solution and nonaqueous electrolytic solution secondary battery using same
AssigneesMitsubishi Chemical Corporation, Mu Ionic Solutions Corporation
InventorsHiroaki Yoshida, Yasuyuki Shigematsu, Minoru Kotato
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Abstract
The present invention relates to a nonaqueous electrolytic solution for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and a nonaqueous electrolytic solution, wherein the nonaqueous electrolytic solution contains the specific compounds (A) and (B).
Claims22
A nonaqueous electrolytic solution suitable for use in a nonaqueous electrolytic solution secondary battery that comprises a negative electrode and a positive electrode capable of storing and releasing metal ions, and the nonaqueous electrolytic solution, the nonaqueous electrolytic solution comprising, based on total nonaqueous electrolytic solution weight:
- (A) a first compound (A) of formula (4), in a range of from 0.01 to 10 wt. %,
- A1 to A6 being independently H, a halogen atom, a hydrocarbon group of 1 to 10 carbon atoms that may have a heteroatom, or an optionally substituted hydrogen silicide group of 1 to 10 silicon atoms, A1 to A6 optionally binding to one another to form a ring, wherein none of A1 to A6 is an aliphatic substituent having an unsaturated bond;
- and
- (B) at least one second compound, in a range of from 0.01 to 2 wt. %, the second compound being selected from the group consisting of a difluorophosphate, a fluorosulfonate, and an imide salt,
- wherein the nonaqueous electrolytic solution comprises no carbonate ester having a halogen atom.
Dependencies are inferred from the claim text.