# US 10,312,505 B2 · Usage of conductive and flexible polymers in lithium batteries

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- Number: US 10,312,505 B2
- Document ID: US10312505B2
- Status: Granted
- Kind: B2
- Application number: 15/551,040
- Filed: 2016-12-21
- Published: 2018-02-01
- Granted: 2019-06-04
- Earliest claimed: 2016-01-07
- Assignees: Enwair Enerji Teknolojileri A.S.
- Applicants: Enwair Enerji Teknolojileri A. S.
- Inventors: Neslihan Yuca; Murat Ferhat Dogdu; Omer Suat Taskin; Mehmet Emre Cetintasoglu
- Web page: https://patentgrep.com/patent/US10312505B2

## CPC

- H01M 4/134: Electrodes based on metals, Si or alloys
- C08G 61/124: {with a five-membered ring containing one nitrogen atom in the ring}
- C08G 61/126: {with a five-membered ring containing one sulfur atom in the ring}
- C08L 65/00: Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain (C08L7/00 - C08L57/00, C08L61/00 take precedence); Compositions of derivatives of such polymers
- H01M 4/38: of elements or alloys
- H01M 4/622: {being polymers}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- C08G 2261/14: Side-groups
- C08G 2261/1412: Saturated aliphatic units
- C08G 2261/1424: containing ether groups, including alkoxy
- C08G 2261/1426: containing carboxy groups (COOH) and/or -C(=O)O-moieties
- C08G 2261/312: Non-condensed aromatic systems, e.g. benzene
- C08G 2261/3221: containing one or more nitrogen atoms as the only heteroatom, e.g. pyrrole, pyridine or triazole
- C08G 2261/3223: containing one or more sulfur atoms as the only heteroatom, e.g. thiophene
- C08G 2261/411: Suzuki reactions
- C08G 2261/51: Charge transport
- H01M 10/052: Li-accumulators
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

The present invention relates to a production method of a block copolymer (PFPEG) formed by PEG fluorenes and thiophene blocks. The block copolymer (PFPEG) increases the conductivity of the electrolyte active material. The binding of both the active material to itself and to the base material increase the flexibility of the copolymer when used in the electrodes of lithium batteries. The present invention also relates to a usage of the block copolymer (PFPEG) in lithium batteries.

## Claims

### Claim 1

A block copolymer for lithium ion batteries, represented by Formula 1:
<Formula 1>
wherein
A is selected from the group consisting of phenylene
pyrrole
and thiophene
R1 and R2 are each independently —(CH2)nCH3, and n is an integer selected from 0 to 8;
x is 1 to 100;
y is 1 to 100; and
m is 1 to 100,000.

### Claim 2 (depends on 1)

The block copolymer of claim 1, wherein A is phenylene

### Claim 3 (depends on 1)

The block copolymer of claim 1, wherein A is thiophene

### Claim 4 (depends on 1)

The block copolymer of claim 1, wherein the ratio of x:y is 1:2.

### Claim 5 (depends on 1)

The block copolymer of claim 1, wherein the molecular weight of the polyethylene glycol (PEG) group is between 500 to 10,000.

### Claim 6 (depends on 1)

A method for preparing the block copolymer of claim 1, comprising
activating a 9,9-dihexylfluorene-2,7-diboronic acid bis (1,3-propanediol) ester and a monomer selected from a group consisting of
mixing the reactivated ester and monomer,
wherein m is 1 to 100,000.