Oligomer-polymer and lithium battery

Patent metadata

Field	Value
Publication number	US-10566626-B2
Application number	US-201715619061-A
Country	US
Kind code	B2
Filing date	Jun 9, 2017
Priority date	Nov 7, 2016
Publication date	Feb 18, 2020
Grant date	Feb 18, 2020

Abstract

An oligomer-polymer is provided. The oligomer-polymer is obtained by the polymerization reaction of a compound containing an ethylenically unsaturated group and a nucleophile compound, wherein the nucleophile compound includes the compound shown in formula 1:

A lithium battery including an anode, a cathode, an isolation film, an electrolyte solution, and a package structure is also provided, wherein the cathode includes the oligomer-polymer.

First claim

What is claimed is:

1. A lithium battery, comprising:
an anode;
a cathode disposed separately from the anode, wherein the cathode comprises a cathode material comprising a lithium-mixed transition metal oxide and an oligomer-polymer obtained by a polymerization reaction of a compound containing an ethylenically unsaturated group and a nucleophile compound, wherein the compound containing the ethylenically unsaturated group comprises a maleimide-based compound, the maleimide-based compound in the cathode comprises monomaleimide or bismaleimide, and the nucleophile compound comprises a compound shown in formula 1:

wherein a mole ratio of the compound containing the ethylenically unsaturated group and the nucleophile compound is between 2:1 and 1:1,
wherein a content of the oligomer-polymer is 0.1 parts by weight to 10 parts by weight based on a total weight of 100 parts by weight of the cathode material;
an isolation film disposed between the anode and the cathode, wherein the isolation film, the anode, and the cathode define a region;
an electrolyte solution disposed in the region, wherein the electrolyte solution comprises an organic solvent and lithium salt; and
a package structure packaging the anode, the cathode, and the electrolyte solution.

2. The lithium battery of claim 1 , wherein the electrolyte solution further comprises an additive, a content of the additive in the electrolyte solution is 0.05 wt % to 10 wt %, the additive comprises a maleimide-based compound, vinylene carbonate, or a mixture thereof, and the maleimide-based compound in the electrolyte solution comprises monomaleimide, polymaleimide, bismaleimide, polybismaleimide, or a copolymer of bismaleimide and monomaleimide.

3. The lithium battery of claim 1 , wherein the nucleophile compound further comprises a compound shown in formula 2 below:

4. The lithium battery of claim 3 , wherein in the nucleophile compound, a mole ratio of the compound shown in formula 1 and the compound shown in formula 2 is between 2:1 and 1:1.

5. The lithium battery of claim 1 , wherein a reaction temperature of the polymerization reaction is between 25° C. and 200° C.

Assignees

• Univ Nat Taiwan Science & Technology
• Ind Tech Res Inst

Inventors

• Wang Fu-Ming
• Hwang Bing-Joe
• Chern Chorng-Shyan
• Hsu Jung-Mu
• Pan Jing-Pin
• Yang Chang-Rung
• Pham Quoc Thai

Classifications

• C08G83/00

  Macromolecular compounds not provided for in groups C08G2/00 - C08G81/00 · CPC title

• H01M4/602 Primary

  Polymers · CPC title

• H01M10/0567

  characterised by the additives · CPC title

• H01M2004/028

  Positive electrodes · CPC title

• H01M10/0525

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