Electrolytic solution and electrochemical device

Patent metadata

Field	Value
Publication number	US-11398643-B2
Application number	US-201816615666-A
Country	US
Kind code	B2
Filing date	Apr 3, 2018
Priority date	Jun 1, 2017
Publication date	Jul 26, 2022
Grant date	Jul 26, 2022

Abstract

The present invention provides, as one aspect, an electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2):wherein R1 to R3 each independently represent an alkyl group or a fluorine atom, R4 represents an alkylene group, and R5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; andwherein R6 to R8 each independently represent an alkyl group or a fluorine atom, R9 represents an alkylene group, and R10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.

First claim

The invention claimed is:

1. An electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2):

wherein R 1 to R 3 each independently represent an alkyl group or a fluorine atom, R 4 represents an alkylene group, and R 5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and

wherein R 6 to R 8 each independently represent an alkyl group or a fluorine atom, R 9 represents an alkylene group, and R 10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.

2. The electrolytic solution according to claim 1 , wherein a number of silicon atoms in one molecule of the compound represented by the formula (1) is one.

3. The electrolytic solution according to claim 1 , wherein
R 5 is a group represented by any of the following formula (3), formula (4) and formula (5):

wherein R 11 represents an alkyl group, and * represents a bond;

wherein R 12 represents an alkyl group, and * represents a bond; and

wherein R 13 represents an alkyl group, and * represents a bond.

4. The electrolytic solution according to claim 1 , wherein
R 10 is a group represented by the following formula (6):

wherein R 14 and R 15 each independently represent a hydrogen atom or an alkyl group, and * represents a bond.

5. The electrolytic solution according to claim 1 , wherein at least one of R 1 to R 3 is a fluorine atom.

6. The electrolytic solution according to claim 1 , wherein at least one of R 6 to R 8 is a fluorine atom.

7. An electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2):

wherein R 1 to R 3 each independently represent an alkyl group or a fluorine atom, R 4 represents an alkylene group, and R 5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and

wherein R 6 to R 8 each independently represent an alkyl group or a fluorine atom, R 9 represents an alkylene group, and R 10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom,
wherein a total of contents of the compound represented by the formula (1) and the compound represented by the formula (2) is 10% by mass or less based on a total amount of the electrolytic solution.

8. An electrochemical device comprising:
a positive electrode;
a negative electrode; and
the electrolytic solution according to claim 1 .

9. The electrochemical device according to claim 8 , wherein the negative electrode comprises a carbon material.

10. The electrochemical device according to claim 9 , wherein the carbon material comprises graphite.

11. The electrochemical device according to claim 9 , wherein the negative electrode further comprises a material comprising at least one element of the group consisting of silicon and tin.

12. The electrochemical device according to claim 8 , wherein the electrochemical device is a non-aqueous electrolytic solution secondary battery or a capacitor.

Assignees

• Showa Denko Materials Co Ltd

Inventors

• Konno Kaoru
• Yamada Kumpei
• Fukuta Ryuichiro

Classifications

• C07F7/1804

  Compounds having Si-O-C linkages (Si-O-acyl linkages C07F7/1896) · CPC title

• C07F7/12

  Organo silicon halides · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M4/387

  Tin or alloys based on tin · CPC title