Organic-inorganic silicon structure-containing block copolymer, electrolyte including the same, and lithium battery including the electrolyte

Patent metadata

Field	Value
Publication number	US-9786950-B2
Application number	US-201514624968-A
Country	US
Kind code	B2
Filing date	Feb 18, 2015
Priority date	Sep 5, 2014
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

An organic-inorganic silicon structure-containing block copolymer including a first domain including an ion conductive polymer block; and a second domain including a polymer block including a non-conducting polymer and an organic-inorganic silicon structure, wherein the organic-inorganic silicon structure is connected to a side chain connected to a backbone of the non-conducting polymer.

First claim

What is claimed is:

1. An organic-inorganic silicon structure-containing block copolymer represented by at least one selected from Formulae 3 to 5:

wherein, in Formula 3,
p is from 2 to 25 and q is from 2 to 25,
R′ is at least one selected from a hydrogen atom, a hydroxyl group, a vinyl ether group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted ethylene oxide group, a substituted or unsubstituted acrylate group, a substituted or unsubstituted methacrylate group, a substituted or unsubstituted glycidyl ether group, a substituted or unsubstituted epoxy group, and a substituted or unsubstituted oxetane group,
R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , and R 13 are each independently at least one selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C1-C20 alkoxy group,
X 2 is a substituted or unsubstituted C1-C20 alkylene group or a substituted or unsubstituted C1-C20 heteroalkylene group,
Y 1 is at least one selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C1-C20 alkoxy group, and
Y 2 is at least one selected from a single bond, a substituted or unsubstituted C1-C20 alkylene group, a substituted or unsubstituted C1-C20 heteroalkylene group, a substituted or unsubstituted C1-C20 sulfonylalkylene group, and a substituted or unsubstituted C1-C20 carbonylalkylene group;

wherein, in Formula 4,
I is from 2 to 25 and m is from 2 to 25,
R″ is at least one selected from a hydrogen atom, a hydroxyl group, a vinyl ether group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted ethylene oxide group, a substituted or unsubstituted acrylate group, a substituted or unsubstituted methacrylate group, a substituted or unsubstituted glycidyl ether group, a substituted or unsubstituted epoxy group, and a substituted or unsubstituted oxetane group,
R 14 , R 15 , R 16 , R 17 , and R 18 are each independently at least one selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C1-C20 alkoxy group,
X 3 is a substituted or unsubstituted C1-C20 alkylene group or a substituted or unsubstituted C1-C20 heteroalkylene group, and
Y 3 is at least one selected from a single bond, a substituted or unsubstituted C1-C20 alkylene group, a substituted or unsubstituted C1-C20 heteroalkylene group, a substituted or unsubstituted C1-C20 sulfonylalkylene group, a substituted or
unsubstituted C1-C20 carbonylalkylene group, and a group of formula

wherein R′ a and R′b are each independently a substituted or unsubstituted C1-C20 alkylene group or a substituted or unsubstituted C1-C20 heteroalkylene group;

wherein, in Formula 5,
x is from 2 to 25 and y is from 2 to 25,
R″′ is at least one selected from a hydrogen atom, a hydroxyl group, a vinyl ether group, a substituted or unsubstituted C1-C20 alkyl group, a substituted or unsubstituted ethylene oxide group, a substituted or unsubstituted acrylate group, a substituted or unsubstituted methacrylate group, a substituted or unsubstituted glycidyl ether group, a substituted or unsubstituted epoxy group, and a substituted or unsubstituted oxetane group,
R 19 , R 20 , R 21 , R 22 , R 23 , R 24 , and R 25 are each independently at least one selected from a hydrogen atom, a halogen atom, a substituted or unsubstituted C1-C20 alkyl group, and a substituted or unsubstituted C1-C20 alkoxy group,
X 4 is a substituted or unsubstituted C1-C20 alkylene group or a substituted or unsubstituted C1-C20 heteroalkylene group, and
Y 4 is at least one selected from a single bond, a substituted or unsubstituted C1-C20 alkylene group, a substituted or unsubstituted C1-C20 heteroalkylene group, a substituted or unsubstituted C1-C20 sulfonylalkylene group, and a substituted or unsubstituted C1-C20 carbonylalkylene group.

2. The organic-inorganic silicon structure-containing block copolymer of claim 1 , wherein the organic-inorganic silicon structure-containing block copolymer comprises at least one selected from a diblock copolymer and a triblock copolymer.

3. An electrolyte comprising:
a polymer matrix;
the organic-inorganic silicon structure-containing block copolymer according to claim 1 , and
a lithium salt.

4. The electrolyte of claim 3 , wherein the polymer matrix comprises at least one selected from a homopolymer and a block copolymer.

5. The electrolyte of claim 4 , wherein the homopolymer comprises at least one selected from a polyethylene oxide, polymethylmethacrylate, polystyrene, polyacrylonitrile, and polyvinylidene fluoride.

6. The electrolyte of claim 4 , wherein the block copolymer comprises:
a third domain comprising an ion conductive polymer block; and
a fourth domain covalently linked to the third domain,
wherein the fourth domain comprises a non-conducting polymer block.

7. The electrolyte of claim 3 , wherein an amount of the organic-inorganic silicon structure in the organic-inorganic silicon structure-containing block copolymer is in a range of about 2 percent by weight to about 10 percent by weight based on a total weight of the polymer matrix.

8. The electrolyte of claim 3 , wherein the electrolyte further comprises at least one selected from an organic solvent, an ionic liquid, an oligomer, and an inorganic particle.

9. The electrolyte of claim 3 , wherein the electrolyte is at least one selected from a gel phase layer and a solid phase layer.

10. A lithium battery comprising:
a positive electrode comprising a positive active material;
a negative electrode allowing intercalation and deintercalation of lithium ions; and
an electrolyte interposed between the positive electrode and the negative electrode,
wherein the electrolyte comprises the electrolyte according to claim 3 .

11. The lithium battery of claim 10 , wherein the negative electrode comprises at least one selected from a lithium metal and a lithium metal alloy.

12. The lithium battery of claim 10 , further comprising a protective layer disposed on a portion of or the entire surface of the negative electrode, or separately disposed between the negative electrode and the electrolyte.

13. The lithium battery of claim 12 , wherein the protective layer is formed as a single layer or multiple layers.

14. The lithium battery of claim 12 , wherein the protective layer is at least one selected from a gel phase layer or solid phase layer.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Yonggun
• Yang Yooseong
• Lee Jenam
• Chang Wonseok
• Choi Hongsoo

Classifications

• C08G77/442

  containing vinyl polymer sequences · CPC title

• H01M2300/0085

  Immobilising or gelification of electrolyte · CPC title

• H01M10/0565 Primary

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

• H01M2300/0094

  in the form of layered products, e.g. coatings · CPC title

• C08G2261/512

  Hole transport · CPC title