Method of making polymer lithium ion battery

Patent metadata

Field	Value
Publication number	US-2016301098-A1
Application number	US-201615185023-A
Country	US
Kind code	A1
Filing date	Jun 17, 2016
Priority date	Dec 24, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

A method of making a polymer lithium ion battery comprises following steps. A case and a battery core located within the case are provided. A mixture is obtained by mixing a first polymer monomer, a second polymer monomer, and a conventional electrolyte solution, wherein the second polymer monomer comprises siloxy group. A lithium ion battery preform is formed by injecting the mixture into the case and sealing the case. The lithium ion battery preform is irradiated with a radiation light, wherein the first polymer monomer and the second polymer monomer are polymerized.

First claim

What is claimed is:

1 . A method for making a lithium ion battery, the method comprising:
providing a case with a battery core located within the case; obtaining a mixture by mixing a first polymer monomer, a second polymer monomer, and a conventional electrolyte solution, wherein the second polymer monomer comprises a siloxy group; forming a lithium ion battery preform by injecting the mixture into the case and sealing the case; and irradiating the lithium ion battery preform with a radiation light, wherein the first polymer monomer and the second polymer monomer are polymerized.

2 . The method of claim 1 , wherein the siloxy group is an alkyl siloxy group.

3 . The method of claim 2 , wherein the alkyl siloxy group has a general formula:

wherein, k≧1, l≧1, m≧1.

4 . The method of claim 2 , wherein the alkyl siloxy group has a general formula Si(OC n H 2n+1 ) 3 , n≧1.

5 . The method of claim 1 , wherein the second polymer monomer comprises γ-methacryloxy propyl triethoxysilane (TEPM) or γ-methacryloxypropyl trimethoxy silane (TMPM).

6 . The method of claim 1 , wherein the radiation light is selected from the group consisting of X ray, γ ray, and β ray.

7 . The method of claim 6 , wherein the radiation light is y ray, a radiation dose of the radiation light ranges from 5kGy to 10kGy, and a radiation dose rate of the radiation light ranges from 100 Gy/min to 300 Gy/min.

8 . The method of claim 1 , wherein a ratio between a total mass of the first polymer monomer and the second polymer monomer and a mass of the conventional solution ranges from 1:5 to 1:1.

9 . The method of claim 1 , wherein the first polymer monomer comprises a crosslink group.

10 . The method of claim 9 , wherein the first polymer monomer comprises a first sub-polymer monomer and a second sub-polymer monomer, the first sub-polymer monomer comprises more than two kinds of functional groups, and the second sub-polymer monomer comprises one kind of functional group.

11 . The method of claim 10 , wherein the first sub-polymer monomer is selected from the group consisting of polyethylene glycol dimethacrylate (PEGDMA), three ethoxy methacrylate, glycidyl acrylate, glycidyl trimethyl, ethyl ethoxylated bisphenol A dimethacrylate, and divinylbenzene.

12 . The method of claim 10 , wherein a ratio between the first sub-polymer monomer and the second sub-polymer monomer is greater than or equal to 1:4.

13 . The method of claim 1 , wherein the first polymer monomer comprises ethylene glycol dimethacrylate (PEGDMA) and methyl methacrylate (MMA), the second polymer monomer comprises γ-methacryloxy propyl triethoxysilane (TEPM) or γ-methacryloxypropyl trimethoxy silane (TMPM), and a mass ratio among the PEGDMA, MMA, TEMP, and TMPM satisfies: PEGDMA:(MMA+TMPM+TEPM)≧1:4.

14 . The method of claim 13 , wherein the mixture generates following reaction:

wherein, 1≦n≦113, 0≦m, o≦100, p≦100, q≦100.

Assignees

• Jiangsu Huadong Inst Of Li-Ion Battery Co Ltd
• Univ Tsinghua

Inventors

• He xiang-ming
• Zhao Peng
• Li Jian-Jun
• Shang yu-ming
• Wang Li
• Yang ju-ping
• Gao Jian
• Wang yao-wu

Classifications

• H01M10/0525

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

• H01M10/058 Primary

  Construction or manufacture · CPC title

• H01M10/0565

  Polymeric materials, e.g. gel-type or solid-type · CPC title

• C08F220/14

  Methyl esters {, e.g. methyl (meth)acrylate} · CPC title

• C08F230/08

  containing silicon · CPC title