Polymer, and electrolyte and lithium secondary battery including the same

Patent metadata

Field	Value
Publication number	US-9856341-B2
Application number	US-201514732941-A
Country	US
Kind code	B2
Filing date	Jun 8, 2015
Priority date	Dec 26, 2014
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A polymer including a first repeating unit represented by Formula 1, a second repeating unit represented by Formula 2, and a third repeating unit:

wherein R 1 to R 3 , X, and Rf in Formula 1 and R 4 to R 6 , R, and a in Formula 2 are the same as those defined in the detailed description, and wherein the polymer has a glass transition temperature of about 25° C. or less or a Young's modulus of about 10 megaPascals or greater.

First claim

What is claimed is:

1. A polymer comprising:
a first repeating unit represented by Formula 1;
a second repeating unit represented by Formula 2; and
a third repeating unit represented by Formula 3:

wherein in Formula 1,
R 1 to R 3 each independently represent hydrogen, an unsubstituted or substituted C 1 -C 20 alkyl group, an unsubstituted or substituted C 1 -C 20 heteroalkyl group, or an unsubstituted or substituted C 6 -C 20 aryl group,
X represents a substituted or unsubstituted C 1 -C 20 alkylene group, a substituted or unsubstituted C 1 -C 20 heteroalkylene group a substituted or unsubstituted C 6 -C 20 arylene group, a substituted or unsubstituted C 2 -C 20 heteroarylene group, a substituted or unsubstituted C 2 -C 20 heterocyclic group, a substituted or unsubstituted C 4 -C 20 carbocyclic group, or —C(═O)O(CH 2 ) n — (where n is an integer between 1 and 10), and
Rf represents fluorine, a C 1 -C 20 perfluorinated alkyl group, a C 3 -C 20 perfluorinated carbocyclic group, a C 6 -C 20 perfluorinated aryl group, or a C 2 -C 20 perfluorinated heteroaryl group,

wherein in Formula 2,
R 4 to R 6 each independently represent hydrogen, an unsubstituted or substituted C 1 -C 20 alkyl group, an unsubstituted or substituted C 1 -C 20 heteroalkyl group, or an unsubstituted or substituted C 6 -C 20 aryl group,
R represents hydrogen, a C 1 -C 20 alkyl group, a C 1 -C 20 heteroalkyl group a C 6 -C 20 aryl group, a C 2 -C 20 heteroaryl group, a C 2 -C 20 heterocyclic group, a C 4 -C 20 carbocyclic group, —PO 3 Li, or —SO 2 Li, and
a is an integer between 1 and 20,

wherein in Formula 3,
R 7 to R 9 each independently represent hydrogen, an unsubstituted or substituted C 1 -C 20 alkyl group, an unsubstituted or substituted C 1 -C 20 heteroalkyl group or an unsubstituted or substituted C 6 -C 20 aryl group,
L represents a substituted or unsubstituted C 1 -C 20 alkylene group, a substituted or unsubstituted C 1 -C 20 heteroalkylene group a substituted or unsubstituted C 6 -C 20 arylene group, a substituted or unsubstituted C 2 -C 20 heteroarylene group, a substituted or unsubstituted C 2 -C 20 heterocyclic group, or a substituted or unsubstituted C 4 -C 20 carbocyclic group,
b is 0 or an integer between 1 and 5, and
G is a group represented by Formula 3a, or a group represented by Formula 3f,

wherein in Formula 3a,
R 10 to R 12 each independently represent hydrogen, a C 1 -C 20 alkyl group, a C 1 -C 20 heteroalkyl group, a C 6 -C 20 aryl group, a C 2 -C 20 carbocyclic group, or a C 2 -C 20 heterocyclic group, and
—Si k O 1.5k (R 13 ) a (R 14 ) b (R 15 ) c   Formula 3f

wherein in Formula 3f,
R 13 , R 14 , and R 15 each independently represent hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 2 -C 20 alkenyl group, a substituted or unsubstituted C 2 -C 20 alkynyl group, a substituted or unsubstituted C 6 -C 20 aryl group, a substituted or unsubstituted C 6 -C 20 aryloxy group, a substituted or unsubstituted C 2 -C 20 heteroaryl group, a substituted or unsubstituted C 2 -C 20 heterocyclic group, a substituted or unsubstituted C 4 -C 20 carbocyclic group, or a C 1 -C 20 silicon-containing functional group, and
k=a+b+c and 6≦k≦20,
wherein the polymer has a glass transition temperature of about 25° C. or less or a Young's modulus of about 10 megaPascals or greater.

2. The polymer of claim 1 , wherein X in Formula 1 is phenylene or —C(═O)O(CH 2 ) n —, (wherein n is an integer between 1 and 5).

3. The polymer of claim 1 , wherein Rf is —F, —CF 3 , or —CF 2 CF 3 .

4. The polymer of claim 1 , wherein an amount of the third repeating unit represented by Formula 3 is in a range of about 0.1 moles to about 0.8 moles based on 1 mole of the second repeating unit.

5. The polymer of claim 1 , wherein an amount of the first repeating unit represented by Formula 1 is in a range of about 0.2 moles to about 0.9 moles based on 1 mole of the second repeating unit.

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

wherein in Formula 4,
l+m+n=1,
0.1≦l≦0.3,
0.4≦m≦0.6, and
0.2≦n≦0.4,
R 1 to R 9 each independently represent hydrogen, a C 6 -C 20 alkyl group, or a C 6 -C 20 aryl group,
Rf represents fluorine, a C 1 -C 12 perfluorinated alkyl group, or a C 3 -C 12 perfluorinated carbocyclic group,
a is an integer between 1 and 20,
R represents a C 1 -C 20 alkyl group, a C 6 -C 20 aryl group, —PO 3 Li, or —SO 2 Li,
L represents an unsubstituted or substituted C 1 -C 20 alkylene group, or an unsubstituted or substituted C 6 -C 20 arylene group,
b is 0 or an integer between 1 and 5, and
G is a group represented by Formula 3a, or a group represented by Formula 3f,

wherein in Formula 3a,
R 10 to R 12 each independently represent hydrogen, a C 1 -C 20 alkyl group, or a C 6 -C 20 aryl group, and
—Si k O 1.5k (R 13 ) a (R 14 ) b (R 15 ) c   Formula 3f

wherein in Formula 3f,
R 13 , R 14 , and R 15 each independently represent hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 2 -C 20 alkenyl group, a substituted or unsubstituted C 2 -C 20 alkynyl group, a substituted or unsubstituted C 6 -C 20 aryl group, a substituted or unsubstituted C 6 -C 20 aryloxy group, a substituted or unsubstituted C 2 -C 20 heteroaryl group, a substituted or unsubstituted C 4 -C 20 carbocyclic group, or a C 1 -C 20 silicon-containing functional group, and
k=a+b+c and 6≦k≦20.

7. The polymer of claim 1 , wherein G in Formula 3 is one selected from groups represented by Formulae 3b to 3d:

wherein in Formula 3b, R 1 , R 3 to R 6 each independently represent hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 2 -C 20 alkenyl group, a substituted or unsubstituted C 2 -C 20 alkynyl group, a substituted or unsubstituted C 6 -C 20 aryl group, a substituted or unsubstituted C 6 -C 20 aryloxy group, a substituted or unsubstituted C 2 -C 20 heteroaryl group, a substituted or unsubstituted C 4 -C 20 carbocyclic group, or a C 1 -C 20 silicon-containing functional group,

wherein in Formula 3c, R 1 , R 2 , R 4 to R 8 each independently represent hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 2 -C 20 alkenyl group, a substituted or unsubstituted C 2 -C 20 alkynyl group, a subs

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Myungjin
• Kim Kihyun
• Kang Hyorang
• Kim Jirae

Classifications

• H01M10/0567

  characterised by the additives · CPC title

• H01M2220/30

  Batteries in portable systems, e.g. mobile phone, laptop · CPC title

• H01M2300/0082

  Organic polymers · CPC title

• C08G77/442

  containing vinyl polymer sequences · CPC title

• C08F212/14

  substituted by heteroatoms or groups containing heteroatoms · CPC title