Alkali metal electrode treatment agent, electrolytic solution for alkali metal secondary battery, alkali metal electrode, alkali metal secondary battery, and module

Patent metadata

Field	Value
Publication number	US-12278336-B2
Application number	US-202017631084-A
Country	US
Kind code	B2
Filing date	Jun 30, 2020
Priority date	Jul 31, 2019
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

An alkali metal electrode treatment agent including an acrylate represented by the following general formula (1):wherein X, Y and Rf are as defined herein and/or a polymer containing an acrylate represented by the general formula (1) as a part or all of its constituent units. Also disclosed is an electrolytic solution for an alkali metal secondary battery and an alkali metal electrode including the acrylate represented by the general formula (1), an alkali metal secondary battery including the alkali metal electrode, and a module including the alkali metal secondary battery.

First claim

The invention claimed is:

1. An electrolytic solution for an alkali metal secondary battery comprising an acrylate represented by the following general formula (1):

wherein X is a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a CFX 1 X 2 group (wherein X 1 and X 2 are the same as or different from each other and are each a hydrogen atom, a fluorine atom, or a chlorine atom), a cyano group, a linear or branched fluoroalkyl group having 1 to 21 carbon atoms, a substituted or unsubstituted benzyl group, a substituted or unsubstituted phenyl group, or a linear or branched alkyl group having 1 to 20 carbon atoms, Y is a direct bond, a hydrocarbon group having 1 to 10 carbon atoms and optionally having an oxygen atom or a sulfur atom, a —CH 2 CH 2 N(R 1 )SO 2 — group (wherein R 1 is an alkyl group having 1 to 4 carbon atoms), a —CH 2 CH(OY 1 )CH 2 — group (wherein Y 1 is a hydrogen atom or an acetyl group), or a —(CH 2 ) n SO 2 — group (n is 1 to 10), and Rf is a linear or branched perfluoroalkyl group having 4 to 6 carbon atoms.

2. An alkali metal secondary battery using the electrolytic solution for an alkali metal secondary battery according to claim 1 .

3. A module comprising the alkali metal secondary battery according to claim 2 .

Assignees

• Daikin Ind Ltd

Inventors

• Yamazaki Shigeaki
• Kuwajima Yoshiko

Classifications

• H01M2300/0034

  Fluorinated solvents · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M10/0525

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

• H01M4/623

  fluorinated polymers · CPC title

• H01M4/381

  Alkaline or alkaline earth metals elements (H01M4/40 takes precedence) · CPC title