# US 2014/0154582 A1 · Lithium battery and method for manufacturing the same

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- Number: US 2014/0154582 A1
- Document ID: US20140154582A1
- Status: Published application
- Kind: A1
- Application number: 13/901,223
- Filed: 2013-05-23
- Published: 2014-06-05
- Earliest claimed: 2012-12-05
- Assignees: Industrial Technology Research Institute
- Applicants: Industrial Technology Research Institute
- Inventors: Chyi-Ming LEU; Angelia Sulaiman LO; Jen-Chih LO
- Web page: https://patentgrep.com/patent/US20140154582A1

## CPC

- H01M 10/058: Construction or manufacture
- H01M 10/052: Li-accumulators
- H01M 10/4235: {Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence)}
- H01M 50/417: Polyolefins
- H01M 50/426: Fluorocarbon polymers
- H01M 50/434: Ceramics
- H01M 50/446: Composite material consisting of a mixture of organic and inorganic materials
- H01M 50/451: comprising layers of only organic material and layers containing inorganic material
- H01M 50/457: comprising three or more layers
- H01M 50/489: Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y10T 29/49115: including coating or impregnating
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Disclosed is a lithium battery, including a positive electrode plate, a negative electrode plate, and a polyolefin separator disposed therebetween. An organic-inorganic hybrid film disposed between the polyolefin separator and the positive electrode plate, and/or disposed between the polyolefin separator and the negative electrode plate. The organic-inorganic hybrid film includes inorganic oxide particles and a fluorinated polymer binder, wherein the inorganic oxide particles and the fluorinated polymer binder have a weight ratio of about 40:60 to 80:20.

## Claims

### Claim 1

A lithium battery, comprising:
a positive electrode plate;
a negative electrode plate;
a polyolefin separator disposed between the positive electrode plate and the negative electrode plate;
an organic-inorganic hybrid film disposed between the polyolefin separator and the positive electrode plate, and/or disposed between the polyolefin separator and the negative electrode plate,
wherein the organic-inorganic hybrid film comprises inorganic oxide particles and a fluorinated polymer binder, and the inorganic oxide particles and the fluorinated polymer binder have a weight ratio of about 40:60 to 80:20.

### Claim 2 (depends on 1)

The lithium battery as claimed in claim 1, wherein the organic-inorganic hybrid film has a thickness of 1 μm to 10 μm.

### Claim 3 (depends on 1)

The lithium battery as claimed in claim 1, wherein the inorganic oxide particles comprise silicon oxide, magnesium oxide, titanium oxide, zinc oxide, aluminum oxide, tin oxide, or combinations thereof.

### Claim 4 (depends on 1)

The lithium battery as claimed in claim 1, wherein the inorganic particles have a diameter of 10 nm to 300 nm.

### Claim 5 (depends on 1)

The lithium battery as claimed in claim 1, wherein the fluorinated polymer binder comprises polytetrofluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), perfluoroalkoxy (PFA) resin, polychlorotrifluoroethene (PCTFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene difluoride (PVDF), polyvinyl fluoride (PVF), or combinations thereof.

### Claim 6 (depends on 1)

The lithium battery as claimed in claim 1, wherein the fluorinated polymer binder has a weight-average molecular weight of 280,000 to 1,000,000.

### Claim 7

A method of forming a lithium battery, comprising:
mixing inorganic oxide particles, a fluorinated polymer binder, and solvent to form a mixture;
forming a film of the mixture;
removing the solvent of the film to form an organic-inorganic hybrid film, wherein the organic-inorganic hybrid film comprises inorganic oxide particles and a fluorinated polymer binder, and the inorganic oxide particles and the fluorinated polymer binder have a weight ratio of about 40:60 to 80:20;
disposing a polyolefin separator between a positive electrode plate and a negative electrode plate; and
disposing the organic-inorganic hybrid film between the positive electrode plate and the polyolefin separator and/or between the negative electrode plate and the polyolefin separator.

### Claim 8 (depends on 7)

The method as claimed in claim 7, wherein the organic-inorganic hybrid film has a thickness of 1 μm to 10 μm.

### Claim 9 (depends on 7)

The method as claimed in claim 7, wherein the inorganic oxide particles comprise silicon oxide, magnesium oxide, titanium oxide, zinc oxide, aluminum oxide, tin oxide, or combinations thereof.

### Claim 10 (depends on 7)

The method as claimed in claim 7, wherein the inorganic particles have a diameter of 10 nm to 300 nm.

### Claim 11 (depends on 7)

The method as claimed in claim 7, wherein the fluorinated polymer binder comprises polytetrofluoroethylene (PTFE), tetrafluoroethylene-hexafluoropropylene copolymer (FEP), perfluoroalkoxy (PFA) resin, polychlorotrifluoroethene (PCTFE), ethylene chlorotrifluoroethylene copolymer (ECTFE), ethylene-tetrafluoroethylene copolymer (ETFE), polyvinylidene difluoride (PVDF), polyvinyl fluoride (PVF), or combinations thereof.

### Claim 12 (depends on 7)

The method as claimed in claim 7, wherein the fluorinated polymer binder has a weight-average molecular weight of 280,000 to 1,000,000.