Secondary battery with electrolytic solution including a methylene cyclic carbonate, battery pack, electric vehicle, energy storage system, electric power tool, and electronic unit including the same
View Patent ↗A secondary battery includes: a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, in which the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1): where R1 and R2 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, a monovalent halogenated hydrocarbon group, an oxygen-containing monovalent hydrocarbon group, or an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 may be bonded to each other.
1. A secondary battery comprising:
a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface,
wherein the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2 corresponds to an oxygen-containing monovalent halogented hydrocarbon group, and R1 and R2 are bonded to each other.
2. The secondary battery according to claim 1 , wherein
the oxygen-containing monovalent halogenated hydrocarbon group is an alkoxy group having 1 to 12 carbon atoms, or a group in which one or more of hydrogen groups in the alkoxy group is substituted with a halogen group.
3. The secondary battery according to claim 1 , wherein a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is within a range of approximately 0.01 wt % to 10 wt % both inclusive.
4. The secondary battery according to claim 1 , wherein the package member is a battery can or a laminate film.
5. The secondary battery according to claim 1 , wherein the secondary battery is a lithium secondary battery.
6. The secondary battery according to claim 1 , wherein the nonaqueous electrolytic solution includes an unsaturated cyclic carbonate represented by an expression (2), and
conditions: that A be approximately 0.01 wt % to 5 wt % both inclusive; B be equal to approximately 0.01 wt % to 5 wt % both inclusive; and that B/A be equal to approximately 0.002 to 500 both inclusive are all satisfied, where a content of the unsaturated cyclic carbonate in the nonaqueous electrolytic solution is A (wt %), and a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is B (wt %):
where R11 and R12 each are a hydrogen group or an alkyl group.
7. The secondary battery according to claim 6 , wherein the unsaturated cyclic carbonate is vinylene carbonate (1,3-dioxo1-2-one) or methyl vinylene carbonate (4-methyl-1,3 -dioxo1-2-one).
8. The secondary battery according to claim 1 , wherein
the nonaqueous electrolytic solution includes a halogenated carbonate,
the halogenated carbonate includes one or both of a halogenated cyclic carbonate represented by an expression (4) and a halogenated chain carbonate represented by an expression (5),
conditions: that C be equal to approximately 0.01 wt % to 30 wt % both inclusive; that D be equal to approximately 0.01 wt % to 5 wt % both inclusive; and that D/C be equal to approximately 1/3000 to 500 both inclusive are all satisfied, where a content of the halogenated carbonate in the nonaqueous electrolytic solution is C (wt %), and a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is D (wt %):
where R17 to R20 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, or a monovalent halogenated hydrocarbon group, and one or more of R17 to R20 is a halogen group or a monovalent halogenated hydrocarbon group, and
where R21 to R26 each are a hydrogen group, a halogen group, a monovalent hydrocarbon group, or a monovalent halogenated hydrocarbon group, and one or more of R21 to R26 is a halogen group or a monovalent halogenated hydrocarbon group.
9. The secondary battery according to claim 8 , wherein the halogenated carbonate is 4-fluoro-1, 3-dioxolane-2-one.
10. The secondary battery according to claim 1 , wherein
the nonaqueous electrolytic solution includes ethylene carbonate (1,3-dioxolane-2-one) and propylene carbonate (4-methyl-1,3-dioxolane-2-one),
a mixture ratio of the ethylene carbonate and the propylene carbonate in weight ratio is within a range of approximately 75:25 to 25:75 both inclusive, and
a content of the methylene cyclic carbonate in the nonaqueous electrolytic solution is within a range of approximately 0.01 wt % to 10 wt % both inclusive.
11. A battery pack comprising:
a secondary battery;
a control section configured to control a usage state of the secondary battery; and
a switch section configured to switch the usage state of the secondary battery according to an instruction from the control section,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.
12. An electric vehicle comprising:
a secondary battery;
a conversion section configured to convert power supplied from the secondary battery into driving force;
a drive section configured to drive by the driving force; and
a control section configured to control a usage state of the secondary battery,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.
13. An energy storage system comprising:
a secondary battery;
one or two or more electrical units configured to receive power from the secondary battery; and
a control section configured to control power supply from the secondary battery to the electrical unit,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.
14. An electric power tool comprising:
a secondary battery; and
a movable section configured to receive power from the secondary battery,
wherein the secondary battery includes a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface, and the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.
15. An electronic unit comprising a secondary battery as a power supply, the secondary battery including a cathode, an anode, and a nonaqueous electrolytic solution in a package member having a flat surface,
wherein the nonaqueous electrolytic solution includes a methylene cyclic carbonate represented by an expression (1):
where each of R1 and R2corresponds to an oxygen-containing monovalent halogenated hydrocarbon group, and R1 and R2 are bonded to each other.
16. The secondary battery according to claim 1 , further comprising a separator, the separator including a base layer made of a porous film and a polymer compound layer disposed on at least one of a first surface and a second surface of the base layer.