Secondary battery, battery pack, electric vehicle, electric power storage system, electric power tool, and electronic apparatus

Patent metadata

Field	Value
Publication number	US-2018358657-A1
Application number	US-201615539512-A
Country	US
Kind code	A1
Filing date	Jan 26, 2016
Priority date	Feb 13, 2015
Publication date	Dec 13, 2018
Grant date	—

Abstract

A secondary battery includes: a cathode, an anode, and an electrolytic solution including a cyano compound. The cathode, the anode, and the electrolytic solution are provided inside a film-like outer package member.

First claim

1 . A secondary battery, comprising:
a cathode; an anode; and an electrolytic solution including a cyano compound represented by the following formula (1), the cathode, the anode, and the electrolytic solution being provided inside a film-like outer package member,

where X1 n1+ is one of a metal ion and an onium ion, M1 is one of transition metal elements, and Group 13 elements, Group 14 elements, and Group 15 elements in the long form of the periodic table of the elements, Rf is one of a fluorine group and a monovalent fluorinated hydrocarbon group, Y1 is one of —C(═O)—(CR1 2 ) d1 -C(═O)—, —CR2 2 -(CR3 2 ) e1 -C(═O)—, —S(═O) 2 —(CR3 2 ) e1 -S(═O) 2 —, —CR2 2 -(CR3 2 ) e1 -S(═O) 2 —, —C(═O)—(CR3 2 ) e1 -S(═O) 2 —, and —CR2 2 -(CR3 2 ) e1 -CR2 2 -, each of R1, R2, and R3 is one of a hydrogen group (—H), a fluorine group (—F), a monovalent hydrocarbon group, and a monovalent fluorinated hydrocarbon group, each of a1, f1, and n1 is an integer of 1 or 2, b1 is an integer of 1 to 4, c1 is an integer of 0 to 3, each of d1 and e1 is an integer of 0 to 4, and each of g1 and m1 is an integer of 1 to 3.

2 . The secondary battery according to claim 1 , wherein the X1 is one of Group 1 elements and Group 2 elements in the long form of the periodic table of the elements.

3 . The secondary battery according to claim 1 , wherein the X1 is lithium (Li).

4 . The secondary battery according to claim 1 , wherein the M1 is one of boron (B), phosphorus (P), and aluminum (Al).

5 . The secondary battery according to claim 1 , wherein
the monovalent hydrocarbon group is one of an alkyl group, an alkenyl group, an alkynyl group, a cycloalkyl group, an aryl group, and a monovalent group in which two or more of the alkyl group, the alkenyl group, the alkynyl group, the cycloalkyl group, and the aryl group are bound, and the monovalent fluorinated hydrocarbon group is a group in which one or more hydrogen groups in the monovalent hydrocarbon group are substituted by a fluorine group.

6 . The secondary battery according to claim 1 , wherein
the Rf is the monovalent fluorinated hydrocarbon group, and the number of carbons in the monovalent fluorinated hydrocarbon group is from 1 to 10.

7 . The secondary battery according to claim 1 , wherein a content of the cyano compound in the electrolytic solution is from 0.01 mol/kg to 0.5 mol/kg both inclusive.

8 . The secondary battery according to claim 1 , wherein
the electrolytic solution includes one or more of unsaturated cyclic carbonate esters represented by the following formulas (2), (3), and (4),

where each of R11 and R12 is one of a hydrogen group and an alkyl group, each of R13 to R16 is one of a hydrogen group, an alkyl group, a vinyl group, and an allyl group, one or more of R13 to R16 is one of the vinyl group and the allyl group, R17 is a group represented by >CR171R172, and each of R171 and R172 is one of a hydrogen group and an alkyl group.

9 . The secondary battery according to claim 1 , wherein the electrolytic solution includes one or more of halogenated carbonate esters represented by the following formulas (5) and (6),

where each of R18 to R21 is one of a hydrogen group, a halogen group, an alkyl group, and a halogenated alkyl group, one or more of R18 to R21 is one of the halogen group and the halogenated alkyl group, each of R22 to R27 is one of a hydrogen group, a halogen group, an alkyl group, and a halogenated alkyl group, and one or more of R22 to R27 is one of the halogen group and the halogenated alkyl group.

10 . The secondary battery according to claim 1 , wherein the secondary battery is a lithium-ion secondary battery.

11 . A battery pack, comprising:
a secondary battery; a controller that controls an operation of the secondary battery; and a switch section that switches the operation of the secondary battery in accordance with an instruction from the controller, the secondary battery including a cathode, an anode, and an electrolytic solution including a cyano compound represented by the following formula (1), the cathode, the anode, and the electrolytic solution being provided inside a film-like outer package member,

where X1 n1+ is one of a metal ion and an onium ion, M1 is one of transition metal elements, and Group 13 elements, Group 14 elements, and Group 15 elements in the long form of the periodic table of the elements, Rf is one of a fluorine group and a monovalent fluorinated hydrocarbon group, Y1 is one of —C(═O)—(CR1 2 ) d1 -C(═O)—, —CR2 2 -(CR3 2 ) e1 -C(═O)—, —S(═O) 2 —(CR3 2 ) e1 -S(═O) 2 —, —CR2 2 -(CR3 2 ) e1 -S(═O) 2 —, —C(═O)—(CR3 2 ) e1 -S(═O) 2 —, and —CR2 2 -(CR3 2 ) e1 -CR2 2 -, each of R1, R2, and R3 is one of a hydrogen group (—H), a fluorine group (—F), a monovalent hydrocarbon group, and a monovalent fluorinated hydrocarbon group, each of a1, f1, and n1 is an integer of 1 or 2, b1 is an integer of 1 to 4, c1 is an integer of 0 to 3, each of d1 and e1 is an integer of 0 to 4, and each of g1 and m1 is an integer of 1 to 3.

12 . An electric vehicle, comprising:
a secondary battery; a converter that converts electric power supplied from the secondary battery into drive power; a drive section that operates in accordance with the drive power; and a controller that controls an operation of the secondary battery, the secondary battery including a cathode, an anode, and an electrolytic solution including a cyano compound represented by the following formula (1), the cathode, the anode, and the electrolytic solution being provided inside a film-like outer package member,

where X1 n1+ is one of a metal ion and an onium ion, M1 is one of transition metal elements, and Group 13 elements, Group 14 elements, and Group 15 elements in the long form of the periodic table of the elements, Rf is one of a fluorine group and a monovalent fluorinated hydrocarbon group, Y1 is one of —C(═O)—(CR1 2 ) d1 -C(═O)—, —CR2 2 -(CR3 2 ) e1 -C(═O)—, —S(═O) 2 —(CR3 2 ) e1 -S(═O) 2 —, —CR2 2 -(CR3 2 ) e1 -S(═O) 2 —, —C(═O)—(CR3 2 ) e1 -S(═O) 2 —, and —CR2 2 -(CR3 2 ) e1 -CR2 2 -, each of R1, R2, and R3 is one of a hydrogen group (—H), a fluorine group (—F), a monovalent hydrocarbon group, and a monovalent fluorinated hydrocarbon group, each of a1, f1, and n1 is an integer of 1 or 2, b1 is an integer of 1 to 4, c1 is an integer of 0 to 3, each of d1 and e1 is an integer of 0 to 4, and each of g1 and m1 is an integer of 1 to 3.

13 . An electric power storage system, comprising:
a secondary battery; one or more electric devices that are supplied with electric power from the secondary battery; and a controller that controls the supplying of the electric power from the secondary battery to the one or more electric devices, the secondary battery including a cathode, an anode, and an electrolytic solution including a cyano compound represented by the following formula (1), the cathode, the anode, and the electrolytic solution being provided inside a film-like outer package member,

where X1 n1+ is one of a metal

Assignees

• Sony Corp

Inventors

• Ihara Masayuki
• Fujita Shigeru

Classifications

• C01D15/00

  Lithium compounds · CPC title

• H01G11/58

  Liquid electrolytes · CPC title

• H01G11/62

  characterised by the solute, e.g. salts, anions or cations therein · CPC title

• B60L50/66

  Arrangements of batteries · CPC title

• H01M10/4257

  Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries · CPC title