Silicon compound, preparation method thereof and lithium battery

Patent metadata

Field	Value
Publication number	US-2021079026-A1
Application number	US-202016820709-A
Country	US
Kind code	A1
Filing date	Mar 17, 2020
Priority date	Sep 16, 2019
Publication date	Mar 18, 2021
Grant date	—

Abstract

A silicon compound, a preparation method thereof, and a lithium battery are provided. The silicon compound is represented by the following Chemical formula 1:
(R 1 ) 4-n —Si-(L-A) n   [Chemical formula 1]

In Chemical formula 1, each substituent is defined the same as in the specification.

First claim

What is claimed is:

1 . A silicon compound represented by the following Chemical formula 1:
(R 1 ) 4-n —Si-(L-A) n   [Chemical formula 1]
in Chemical formula 1, L is a linker, A is a carboxyl group, R 1 is each independently hydrogen, a halogen atom, an alkyl group, an aryl group, an alkoxy group, or a hydroxyl group, n is an integer of 0 to 4, when n is greater than or equal to 2, L may be the same or different group.

2 . The silicon compound of claim 1 , wherein the linker comprises an alkylene group, an arylene group, a heteroarylene group, an alkyleneoxy group, a cycloalkylene group, an amide group, a carbonyloxy group, a divalent group having a halogen, or a combination thereof.

3 . A preparation method of a silicon compound, comprising:
providing an olefin reactant; and connecting the olefin reactant to a silicon reactant via a hydrosilylation reaction to obtain the silicon compound, wherein the silicon reactant has at least one silane functional group, wherein the olefin reactant comprises a terminal olefin functional group, a terminal carboxyl group, and a linker connected to the terminal olefin functional group and the terminal carboxyl group.

4 . The preparation method of the silicon compound of claim 3 , wherein the silicon reactant is represented by (R) 4-n —Si—(H) n ,
wherein R is each independently a halogen atom, an alkyl group, an aryl group, an alkoxy group, or a hydroxyl group,
n is an integer of 1 to 4.

5 . The preparation method of the silicon compound of claim 3 , wherein the linker comprises an alkylene group, an arylene group, a heteroarylene group, an alkyleneoxy group, a cycloalkylene group, an amide group, a carbonyloxy group, a divalent group having a halogen, or a combination thereof.

6 . The preparation method of the silicon compound of claim 3 , wherein the olefin reactant comprises (meth)acrylic acid, acrylic acid, or carboxyethyl acrylate.

7 . A preparation method of a silicon compound, comprising:
providing a first olefin reactant; connecting the first olefin reactant to a silicon reactant via a hydrosilylation reaction to obtain an intermediate product; and bringing a second olefin reactant in contact with the intermediate product such that the second olefin reactant is connected to the intermediate product to obtain the silicon compound, wherein the silicon reactant has at least one silane functional group, wherein the first olefin reactant comprises a first terminal olefin functional group, a group capable of reacting with the olefin functional group, and a first linker connected to the first terminal olefin functional group and the group capable of reacting with the olefin functional group, and the second olefin reactant comprises a second terminal olefin functional group, a terminal carboxyl group, and a second linker connected to the second terminal olefin functional group and the terminal carboxyl group.

8 . The preparation method of the silicon compound of claim 7 , wherein the silicon reactant is represented by (R) 4-n —Si—(H) n ,
wherein R is each independently a halogen atom, an alkyl group, an aryl group, an alkoxy group, or a hydroxyl group,
n is an integer of 1 to 4.

9 . The preparation method of the silicon compound of claim 7 , wherein the first linker comprises an alkylene group, an arylene group, a heteroarylene group, an alkyleneoxy group, a cycloalkylene group, an amide group, a carbonyloxy group, a divalent group having a halogen, or a combination thereof.

10 . The preparation method of the silicon compound of claim 7 , wherein the second linker comprises an alkylene group, an arylene group, a heteroarylene group, an alkyleneoxy group, a cycloalkylene group, an amide group, a carbonyloxy group, a divalent group having a halogen, or a combination thereof.

11 . The preparation method of the silicon compound of claim 7 , wherein the group capable of reacting with the olefin functional group comprises an alkyl halide group.

12 . The preparation method of the silicon compound of claim 7 , wherein the first olefin reactant comprises allyl-2-bromo-2-methylpropionate.

13 . The preparation method of the silicon compound of claim 7 , wherein the second olefin reactant comprises (meth)acrylic acid, acrylic acid, or carboxyethyl acrylate.

14 . A lithium battery, comprising:
a cathode; an anode disposed separately from the cathode, wherein the anode comprises the silicon compound of claim 1 ; a separator disposed between the cathode and the anode, wherein the separator, the cathode, and the anode define a housing region; an electrolyte solution disposed in the housing region; and a package structure covering the cathode, the anode, and the electrolyte solution.

15 . The lithium battery of claim 14 , wherein the electrolyte solution comprises an organic solvent, lithium salt, and an additive.

16 . The lithium battery of claim 15 , wherein the additive comprises monomaleimide, polymaleimide, bismaleimide, polybismaleimide, a copolymer of bismaleimide and monomaleimide, vinylene carbonate, or a mixture thereof.

17 . A lithium battery, comprising:
a cathode; an anode disposed separately from the cathode, wherein the anode comprises the silicon compound of claim 2 ; a separator disposed between the cathode and the anode, wherein the separator, the cathode, and the anode define a housing region; an electrolyte solution disposed in the housing region; and a package structure covering the cathode, the anode, and the electrolyte solution.

18 . The lithium battery of claim 17 , wherein the electrolyte solution comprises an organic solvent, lithium salt, and an additive.

19 . The lithium battery of claim 17 , wherein the additive comprises monomaleimide, polymaleimide, bismaleimide, polybismaleimide, a copolymer of bismaleimide and monomaleimide, vinylene carbonate, or a mixture thereof.

Assignees

• Univ Nat Taiwan Science & Technology

Inventors

• Wang Fu-Ming
• Pham Quoc Thai
• Hailu Alem Gebrelibanos
• Imawan Arif Cahyo

Classifications

• C07F7/083 Primary

  Syntheses without formation of a Si-C bond · CPC title

• H01M4/386

  Silicon or alloys based on silicon · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• C07F7/081

  comprising at least one atom selected from the elements N, O, halogen, S, Se or Te · CPC title