POLYMER, ELECTROLYTE INCLUDING THE SAME, AND LITHIUM BATTERY INCLUDING THE POLYMER

• US 20190312305A1
• Filed: 07/12/2017
• Published: 10/10/2019
• Est. Priority Date: 07/13/2016
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: JEONG, Myunghwan, KIM, Kyoungsoo, YOU, Yongchan, HAN, Manseok, KIM, Taejeong, CHO, Erang
• Granted Patent: US 11,183,709 B2
• Time in Patent Office: Days
• CPC Class Codes: C08G 65/326 containing sulfur
• CPC Class Codes: C08G 65/331 containing oxygen cyclic ether compounds C08G65/26
• CPC Class Codes: C08G 65/38 derived from phenols
• CPC Class Codes: C08G 65/40 from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
• CPC Class Codes: C08G 65/48 Polymers modified by chemical after-treatment
• CPC Class Codes: C08J 3/24 Crosslinking, e.g. vulcanising, of macromolecules mechanical aspects B29C35/00; crosslinking agents C08K
• CPC Class Codes: C08L 2203/20 use in electrical or conductive gadgets
• CPC Class Codes: C08L 71/10 from phenols
• CPC Class Codes: H01M 10/0422 Cells or battery with cylindrical casing
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 8/1018 Polymeric electrolyte materials
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

Provided are a polymer represented by Formula 1, an electrolyte including the same, and a lithium battery including the polymer.

Claims

1. A polymer represented by Formula 1:

2. The polymer of claim 1, wherein substituents of the C₃-C₃₀ cycloalkyl ring, the C₃-C₃₀ cycloalkyl ring, the C₆-C₃₀ aryl ring, the C₂-C₃₀ heteroaryl ring, and the C₁-C₄ alkylene group are each independently a polar functional group comprises hydrogen, halogen, a C₁-C₂₀ alkyl group unsubstituted or substituted with halogen, a C₂-C₂₀ alkenyl group unsubstituted or substituted with halogen, a C₂-C₂₀ alkynyl group unsubstituted or substituted with halogen, a C₃-C₂₀ cycloalkenyl group unsubstituted or substituted with halogen, a C₃-C₂₀ heterocyclyl group unsubstituted or substituted with halogen, a C₆-C₄₀ aryl group unsubstituted or substituted with halogen, a C₂-C₄₀ heteroaryl group unsubstituted or substituted with halogen, or one or more heteroatoms.

3. The polymer of claim 1, wherein the polymer is represented by Formula 2:

4. The polymer of claim 1, wherein the polymer is represented by Formula 3:

5. The polymer of claim 1, wherein the polymer is represented by Formula 4:

6. The polymer of claim 1, wherein the crosslinkable functional group is a vinyl group unsubstituted or substituted with halogen, an aryl group unsubstituted or substituted with halogen, an ethynyl group unsubstituted or substituted with halogen, or an epoxy group unsubstituted or substituted with halogen.

7. The polymer of claim 1, wherein the heteroatom-containing linking group is —

O—

, —

S—

, —

S(═

O)—

, —

S(═

O)₂—

, —

C(═

O)—

, —

Si(E₁)(E₂)-, or —

P(═

O)(E₃)-, and E₁, E₂, and E₃ are each independently hydrogen, halogen, or a C₁-C₁₀ alkyl group unsubstituted or substituted with halogen;

or a C₆-C₂₀ aryl group unsubstituted or substituted with halogen.

8. The polymer of claim 1, wherein the polymer is represented by one of Formulae 5 to 17:

9. The polymer of claim 1, wherein the polymer has a weight-average molecular weight in a range of 5,000 to 300,000 as measured by gel permeation chromatography (GPC) with respect to a polystyrene reference sample.

10. The polymer of claim 1, wherein the polymer has a glass transition temperature of at least −

20°

C.

11. An electrolyte comprising:

the polymer of claim 1; and

a lithium salt.

12. The electrolyte of claim 11, wherein the lithium salt comprises at least one selected from LiPF₆, LiBF₄, LiSbF₆, LiAsF₆, LiClO₄, LiCF₃SO₃, Li(CF₃SO₂)₂N, LiC₄F₉SO₃, LiAlO₂, LiAlCl₄, LiN(C_xF_2x+1SO₂)(C_yF_2y+1SO₂)(2≤

x≤

20, 2≤

y≤

20), LiCl, and LiI.

13. The electrolyte of claim 11, wherein the electrolyte has ionic conductivity of at least 7×

10<sup>−

7</sup> S/cm at a temperature of 20°

C.

14. The electrolyte of claim 11, wherein the electrolyte further comprises a product of a crosslinking reaction of the polymer.

15. A lithium battery comprising:

a cathode;

a anode; and

an electrolyte located between the cathode and the anode,

wherein at least one selected from the cathode, the anode, and the electrolyte comprise at least one of the polymer of claim 1 and a crosslinking product thereof.