Boron-containing compound and electrolyte solution additive for secondary battery including the same

Patent metadata

Field	Value
Publication number	US-11976088-B2
Application number	US-202218078671-A
Country	US
Kind code	B2
Filing date	Dec 9, 2022
Priority date	Dec 10, 2021
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Provided are a novel boron-containing compound and an electrolyte solution additive for a secondary battery including the same. The electrolyte solution for a secondary battery provided in one embodiment includes the novel boron-containing compound, thereby suppressing the decomposition of an electrolyte solution to improve the capacity and the life characteristics of a battery.

First claim

The invention claimed is:

1. A compound represented by the following Chemical Formula 1:

wherein
X 1 and X 3 are independently of each other a substituted or unsubstituted compound represented by the above Chemical Formula 2;
X 2 and X 4 are independently of each other hydrogen, halogen, substituted or unsubstituted C 1-15 alkyl, substituted or unsubstituted C 2-15 alkenyl, or the substituted or unsubstituted compound represented by the above Chemical Formula 2;
n and m are independently of each other an integer of 0 to 15, and A is a bond or —C(═O)—;
Y is independently of each other —CH 2 — or —CH 2 CH 2 —; and
M is an alkali metal.

2. The compound of claim 1 ,
wherein X 1 and X 3 are independently of each other the substituted or unsubstituted compound represented by Chemical Formula 2;
X 2 and X 4 are independently of each other hydrogen, halogen, substituted or unsubstituted C 1-10 alkyl, substituted or unsubstituted C 2-10 alkenyl, or the substituted or unsubstituted compound represented by Chemical Formula 2;
n and m are independently of each other an integer of 0 to 10, and A is a bond; and
Y is independently of each other a bond or —CH 2 —.

3. The compound of claim 1 , wherein the compound represented by Chemical Formula 2 is any one selected from the group consisting of the following compounds:

4. The compound of claim 1 , wherein M is lithium, sodium, potassium, or cesium.

5. The compound of claim 1 , wherein the compound represented by Chemical Formula 1 is any one selected from the group consisting of compounds represented by the following Chemical Formulae:

6. An electrolyte solution additive for a secondary battery comprising a compound represented by the following Chemical Formula 1:

wherein
X 1 and X 3 are independently of each other a substituted or unsubstituted compound represented by the above Chemical Formula 2;
X 2 and X 4 are independently of each other hydrogen, halogen, substituted or unsubstituted C 1-15 alkyl, substituted or unsubstituted C 2-15 alkenyl, or the substituted or unsubstituted compound represented by the above Chemical Formula 2;
n and m are independently of each other an integer of 0 to 15, and A is a bond or —C(═O)—;
Y is independently of each other —CH 2 — or —CH 2 CH 2 —; and
M is an alkali metal.

7. The electrolyte solution additive for a secondary battery of claim 6 ,
wherein X 1 and X 3 are independently of each other the substituted or unsubstituted compound represented by Chemical Formula 2;
X 2 and X 4 are independently of each other hydrogen, halogen, substituted or unsubstituted C 1-10 alkyl, substituted or unsubstituted C 2-10 alkenyl, or the substituted or unsubstituted compound represented by Chemical Formula 2;
n and m are independently of each other an integer of 0 to 10, and A is a bond; and
Y is independently of each other a bond or —CH 2 —.

8. The electrolyte solution additive for a secondary battery of claim 6 , wherein the compound represented by Chemical Formula 2 is any one selected from the group consisting of the following compounds:

9. The electrolyte solution additive for a secondary battery of claim 6 , wherein M is lithium, sodium, potassium, or cesium.

10. The electrolyte solution additive for a secondary battery of claim 6 , wherein the compound represented by Chemical Formula 1 is any one selected from the group consisting of compounds represented by the following chemical formulae:

11. An electrolyte solution for a secondary battery comprising the electrolyte solution additive for a secondary battery of claim 6 .

12. A protective film of an electrode comprising the electrolyte solution additive for a secondary battery of claim 6 .

13. A secondary battery comprising the electrolyte solution for a secondary battery of claim 11 .

Assignees

• Sk On Co Ltd

Inventors

• Kim Myoung Lae
• Kim Chanwoo
• Shim Yu Na
• Ryu Jaechan
• Lee Cholho
• Lee Han Sol

Classifications

• C07F5/022 Primary

  without C-boron linkages · CPC title

• H01M10/0567

  characterised by the additives · CPC title

• H01M2300/0025

  Organic electrolyte · CPC title

• H01M10/052

  Li-accumulators · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title