Nonaqueous electrolyte solution for secondary battery, secondary battery, battery pack, electrically driven vehicle, power storage system, electrically driven tool, and electronic apparatus

Patent metadata

Field	Value
Publication number	US-10177407-B2
Application number	US-201514622061-A
Country	US
Kind code	B2
Filing date	Feb 13, 2015
Priority date	Feb 20, 2014
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

Provided is a secondary battery including a positive electrode, a negative electrode, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (1).

First claim

The invention is claimed as follows:

1. A secondary battery, comprising: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

2. The secondary battery according to claim 1 , wherein the monovalent hydrocarbon group and the monovalent halogenated hydrocarbon group have 1 to 10 carbon atoms, respectively.

3. The secondary battery according to claim 1 , wherein an amount of the boron compound in the nonaqueous electrolyte solution is 0.01% by weight to 3% by weight.

4. The secondary battery according to claim 1 , wherein the secondary battery is a lithium secondary battery.

5. The secondary battery according to claim 1 , wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, and the monovalent halogenated hydrocarbon group.

6. A battery pack, comprising: a secondary battery; a control unit that controls an operation of the secondary battery; and a switch unit that switches the operation of the secondary battery in response to an instruction from the control unit, wherein the secondary battery includes: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

7. An electrically driven vehicle, comprising: a secondary battery; a conversion unit that converts power supplied from the secondary battery into a driving force; a drive unit that drives in response to the drive force; and a control unit that controls an operation of the secondary battery, wherein the secondary battery includes:
a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

8. A power storage system, comprising: a secondary battery; one or more electrical apparatuses to which power is supplied from the secondary battery; and a control unit that controls power supply to the electrical apparatuses from the secondary battery, wherein the secondary battery includes: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

9. An electrically driven tool, comprising: a secondary battery; and a movable unit to which power is supplied from the secondary battery, wherein the secondary battery includes: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

10. An electronic apparatus, comprising: a secondary battery as a power supply source, wherein the secondary battery includes: a positive electrode; a negative electrode; and a nonaqueous electrolyte solution, wherein the nonaqueous electrolyte solution includes a boron compound having a quaternary structure expressed by Formula (3):

wherein each of R3 to R6 represents any one of a hydrogen group, a halogen group, a monovalent hydrocarbon group, and a monovalent halogenated hydrocarbon group,
the monovalent hydrocarbon group comprises a group in which two or more kinds of alkynyl groups are coupled so as to have one valence, and
the monovalent halogenated hydrocarbon group is a group in which at least one hydrogen group of the monovalent hydrocarbon group is substituted with a halogen group, and the halogen group includes at least one kind of group selected among a fluorine group (—F), a chlorine group (—Cl), a bromine group (—Br), and an iodine group (—I).

Assignees

• Murata Manufacturing Co

Inventors

• Mita Hiroki
• Kubota Tadahiko

Classifications

• B60L58/14

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• B60L58/24

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• B60L58/15

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• B60L2210/40

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• B60L2240/34

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