Additive of Electrolytic Solution for Lithium Secondary Battery, Electrolytic Solution for Lithium Secondary Battery Using the Same and Lithium Secondary Battery
AssigneeHitachi, Ltd.
InventorNorio IWAYASU
Life of this patent
Estimating the term…
Abstract
In the present invention, a compound represented by Formula (1) is used as an additive of electrolytic solution for a lithium secondary battery, (where, in Formula (1), R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen; R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X; X denotes alkali metal or alkali earth metal; and at least any of R4 to R8 is BF3X).
Claims11
An additive of electrolytic solution for a lithium secondary battery, which is represented by Formula (1),
- (1)
- wherein R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen;
- R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X;
- X denotes alkali metal or alkali earth metal;
- and at least any of R4 to R8 is BF3X.
A lithium secondary battery comprising an electrolytic solution, a positive electrode and a negative electrode, wherein:
- the electrolytic solution contains an electrolyte salt, nonaqueous solvent and an additive;
- and
- the additive contains a compound represented by Formula (1),
- wherein R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen;
- R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X;
- X denotes alkali metal or alkali earth metal;
- and at least any of R4 to R8 is BF3X.
A lithium secondary battery comprising a positive electrode, a negative electrode and an electrolyte, wherein:
- the negative electrode has a film that contains a compound represented by a formula (2),
- (2)
- wherein R1 to R3 respectively denote any of hydrogen, an alkyl group and a functional group containing halogen;
- R4 to R8 respectively denote any of hydrogen, a hydrocarbon group, a functional group containing halogen and BF3X;
- X denotes alkali metal or alkali earth metal;
- at least any of R4 to R8 is BF3X;
- and “n” denotes the number of repeating units).
Dependencies are inferred from the claim text.