Sulfonylimide Compound, Production Method Thereof, Electrolyte Composition, Electrolytic Solution and Lithium Ion Battery

Patent metadata

Field	Value
Publication number	US-2019165417-A1
Application number	US-201816201078-A
Country	US
Kind code	A1
Filing date	Nov 27, 2018
Priority date	Nov 28, 2017
Publication date	May 30, 2019
Grant date	—

Abstract

wherein R1, R2 and R3 each independently represent fluorine, an alkyl group having 1 to 6 carbon atoms or a fluoroalkyl group having 1 to 6 carbon atoms; and M+ represents an alkali metal ion.

First claim

What is claimed is:

1 . A compound represented by the following formula (1):

wherein R 1 , R 2 and R 3 each independently represent fluorine, an alkyl group having 1 to 6 carbon atoms or a fluoroalkyl group having 1 to 6 carbon atoms; and M represents an alkali metal ion.

2 . The compound according to claim 1 , wherein each R 1 , R 2 and R 3 in the formula (1) is a fluorine atom and M + is Li + .

3 . An electrolyte composition comprising a compound represented by the following formula (1) and a compound represented by the following formula (2), wherein the content of the compound of the formula (1) in the electrolyte composition is 1 mass ppm to 200000 mass ppm; and the content of the compound of the formula (2) is 100000 mass ppm or more,

wherein R 1 , R 2 and R 3 each independently represent fluorine, an alkyl group having 1 to 6 carbon atoms or a fluoroalkyl group having 1 to 6 carbon atoms; and M + represents an alkali metal ion,
(XSO 2 )(XSO 2 )NM  (2)

wherein X represents a fluorine atom, an alkyl group having 1 to 6 carbon atoms or a fluoroalkyl group having 1 to 6 carbon atoms; a plurality of X may be the same or different; and M represents an alkali metal.

4 . The electrolyte composition according to claim 3 , wherein each R 1 , R 2 and R 3 in the formula (1) is a fluorine atom, M + is Li + and each X in the formula (2) is a fluorine atom.

5 . The electrolyte composition according to claim 3 , further comprising 100 mass ppm to 100000 mass ppm of MFSO 3 (M represents an alkali metal).

6 . The electrolyte composition according to claim 4 , further comprising 100 mass ppm to 100000 mass ppm of MIFSO 3 (M represents an alkali metal).

7 . A solution containing 0.1 mass ppm to 180000 mass ppm of a compound represented by the following formula (4):

wherein R 1 , R 2 , R 3 each independently represent fluorine or a fluoroalkyl group having 1 to 6 carbon atoms.

8 . The solution according to claim 7 , further containing 0.1 mass ppm to 10000 mass ppm of LiFSO 3 .

9 . The solution according to claim 7 , further containing at least one compound selected from the group consisting of LiPF 6 , LiBF 4 and LiN(SO 2 C n F 2n+1 ) 2 wherein n=an integer of 0 to 6.

10 . The solution according to claim 7 , further containing 1 mass ppm to 90 mass % of lithium bis(fluorosulfonyl)imide.

11 . The solution according to claim 7 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

12 . An electrolytic solution containing the solution according to claim 7 .

13 . A lithium ion battery comprising the electrolytic solution according to claim 12 .

14 . The solution according to claim 8 , further containing at least one compound selected from the group consisting of LiPF 6 , LiBF 4 and LiN(SO 2 C n F 2n+1 ) 2 wherein n=an integer of 0 to 6.

15 . The solution according to claim 8 , further containing 1 mass ppm to 90 mass % of lithium bis(fluorosulfonyl)imide.

16 . The solution according to claim 8 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

17 . The solution according to claim 9 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

18 . The solution according to claim 10 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

19 . The solution according to claim 14 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

20 . The solution according to claim 15 , wherein each R 1 , R 2 and R 3 is a fluorine atom.

Assignees

• Nippon Catalytic Chem Ind
• Morita Chemical Ind Co Ltd

Inventors

• Morita Yoshihiro
• Mizuno Hiroyuki
• FUKATA Yukihiro
• SHIBATA Shin-ya
• Itayama Naohiko
• Katsuyama Hiromoto

Classifications

• H01M10/4235

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title

• H01M10/0525

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

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M10/0567 Primary

  characterised by the additives · CPC title

• H01M10/0563

  Liquid materials, e.g. for Li-SOCl2 cells · CPC title