Oligomer and lithium battery

Patent metadata

Field	Value
Publication number	US-10749181-B2
Application number	US-201715406398-A
Country	US
Kind code	B2
Filing date	Jan 13, 2017
Priority date	Nov 23, 2016
Publication date	Aug 18, 2020
Grant date	Aug 18, 2020

Abstract

An oligomer and a lithium battery are provided. The oligomer is obtained by a reaction of epoxy acrylate and barbituric acid. The lithium battery includes an anode, a cathode, a separator, an electrolyte solution and a packaging structure, wherein the cathode includes the oligomer.

First claim

What is claimed is:

1. An oligomer, obtained by reacting a reaction mixture consisting of epoxy acrylate resin, barbituric acid, and solvent.

2. The oligomer according to claim 1 , wherein a molar ratio of the epoxy acrylate resin to the barbituric acid is between 1:1 and 4:1.

3. The oligomer according to claim 1 , wherein the epoxy acrylate resin has at least one acrylic acid group.

4. The oligomer according to claim 3 , wherein the epoxy acrylate resin has a structure represented by formula 1:

wherein R1 is substituted or unsubstituted C1-C10 alkyl, or substituted or unsubstituted C6-C10 aryl; R2 is —H, —CH 3 or —CF 3 .

5. The oligomer according to claim 3 , wherein the epoxy acrylate resin has a structure represented by formula 2:

wherein R is substituted or unsubstituted C1-C10 alkyl or an ether group; R2 is —H, —CH 3 or —CF 3 .

6. The oligomer according to claim 5 , wherein R is C1-C10 alkyl substituted by at least one acrylic acid group.

7. The oligomer according to claim 1 , wherein the barbituric acid has a structure represented by formula 3:

wherein R3 and R4 are each independently —H, —CH 3 , —C 2 H 5 , —C 6 H 5 , —CH(CH 3 ) 2 , —CH 2 CH(CH 3 ) 2 , —CH 2 CH 2 CH(CH 3 ) 2 or

8. A lithium battery, comprising:
an anode;
a cathode, disposed separately from the anode, wherein the cathode comprises the oligomer according to claim 1 ;
a separator, disposed between the anode and the cathode, wherein the separator, the anode and the cathode define an accommodation area;
an electrolyte solution, disposed in the accommodation area; and
a packaging structure, encapsulating the anode, the cathode and the electrolyte solution.

9. The lithium battery according to claim 8 , wherein the electrolyte solution comprises an organic solvent, lithium salt and an additive.

10. The lithium battery according to claim 9 , wherein the additive comprises monomaleimide, polymaleimide, bismaleimide, poly-bismaleimide, copolymer of bismaleimide and monomaleimide, vinylene carbonate or a mixture thereof.

Assignees

• Univ Nat Taiwan Science & Technology

Inventors

• Wang Fu-Ming
• Chern Chorng-Shyan

Classifications

• C07D239/62

  Barbituric acids · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/052 Primary

  Li-accumulators · CPC title

• C09D4/00

  Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond {; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16} · CPC title

• H01M10/0567

  characterised by the additives · CPC title