Electrolytic solution and secondary battery

Patent metadata

Field	Value
Publication number	US-2022093963-A1
Application number	US-202117538114-A
Country	US
Kind code	A1
Filing date	Nov 30, 2021
Priority date	May 31, 2019
Publication date	Mar 24, 2022
Grant date	—

Abstract

An electrolytic solution includes at least one compound of a first oxazoline-based compound having a molecular weight of 200 or less and a second oxazoline-based compound having a molecular weight of 200 or less, and the electrolytic solution includes no dioxolane.

First claim

1 . An electrolytic solution, comprising at least one compound of a first compound represented by a chemical formula (1) and having a molecular weight of 200 or less or a second compound represented by a chemical formula (2) and having a molecular weight of 200 or less, and comprising no dioxolane,

wherein in the chemical formula (1), R 1 to R 5 each independently represent at least one of a hydrocarbon group, a halogen group, or a hydrogen group, and

wherein in the chemical formula (2), R 6 to R 13 each independently represent at least one of a hydrocarbon group, a halogen group, or a hydrogen group.

2 . The electrolytic solution according to claim 1 , wherein a content of the at least one compound is from 0.001% by mass to 1% by mass.

3 . A secondary battery, comprising:
a positive electrode; a negative electrode; and the electrolytic solution according to claim 1 .

4 . A secondary battery, comprising:
a positive electrode; a negative electrode; and the electrolytic solution according to claim 2 .

5 . The secondary battery according to claim 3 , wherein the negative electrode includes silicon.

6 . The secondary battery according to claim 4 , wherein the negative electrode includes silicon.

7 . The secondary battery according to claim 3 , wherein the positive electrode includes a positive electrode current collector and a positive electrode active material layer provided on at least a side of the positive electrode current collector.

8 . The secondary battery according to claim 7 , wherein the positive electrode current collector includes a metal foil.

9 . The secondary battery according to claim 7 , wherein the positive electrode active material layer includes at least one of a binder or a conductive agent.

10 . The secondary battery according to claim 3 , wherein the negative electrode includes a negative electrode current collector and a negative electrode active material layer provided on at least a side of the negative electrode current collector.

11 . The secondary battery according to claim 3 , further comprising a separator, wherein the separator is provided between the positive electrode and the negative electrode.

12 . The secondary battery according to claim 11 , wherein the separator includes a porous film.

13 . An electronic device, comprising:
the secondary battery according to claim 3 ; and an electronic circuit; wherein the secondary battery is electrically connected to the electronic circuit.

Assignees

• Murata Manufacturing Co

Inventors

• Odani Toru
• Nagata Yoshihide

Classifications

• H01M10/052

  Li-accumulators · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M4/134

  Electrodes based on metals, Si or alloys · CPC title

• H01M10/0525 Primary

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title