# US 9,040,202 B2 · Composite material tape for lithium secondary battery and lithium secondary battery using the same

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- Number: US 9,040,202 B2
- Document ID: US9040202B2
- Status: Granted
- Kind: B2
- Application number: 13/402,652
- Filed: 2012-02-22
- Published: 2012-06-21
- Granted: 2015-05-26
- Earliest claimed: 2004-09-22
- Assignees: Samsung SDI Co., Ltd.
- Applicants: Cheon Soo Kim; Hong Sup Lim; Sang Won Lee
- Inventors: Cheon Soo Kim; Hong Sup Lim; Sang Won Lee
- Web page: https://patentgrep.com/patent/US9040202B2

## CPC

- H01M 10/0587: of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
- C09J 7/22: Plastics; Metallised plastics
- H01M 10/052: Li-accumulators
- H01M 10/425: {Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00)}
- H01M 50/202: Casings or frames around the primary casing of a single cell or a single battery
- H01M 50/571: Methods or arrangements for affording protection against corrosion; Selection of materials therefor
- H01M 50/586: inside the batteries, e.g. incorrect connections of electrodes
- H01M 50/595: Tapes
- C08K 3/20: Oxides; Hydroxides {(graphene oxides C08K3/042)}
- C08K 3/28: Nitrogen-containing compounds
- C09J 2301/41: additives as essential feature of the carrier layer
- C09J 2423/006: in the substrate
- C09J 2467/006: in the substrate
- C09J 2471/006: in the substrate
- C09J 2479/086: in the substrate
- C09J 2481/006: in the substrate
- H01M 50/119: Metals
- H01M 50/121: Organic material
- H01M 50/129: with two or more layers of only organic material
- H01M 50/136: Flexibility or foldability
- H01M 2200/00: Safety devices for primary or secondary batteries
- Y02E 60/10: Energy storage using batteries
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- 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

## Abstract

A composite material tape and a lithium secondary battery using the same are provided. The composite material tape includes an organic base and at least one inorganic element dispersed within the organic base. The composite material tapes of the present invention exhibit improved Insulative and heat-resistant characteristics.

## Claims

### Claim 1

A lithium secondary battery comprising:
an electrode assembly comprising:
a first electrode plate having a first electrode collector, the first electrode collector comprising a coated region and an uncoated region;
a second electrode plate having a second electrode collector, the second electrode collector comprising a coated region and an uncoated region, and
a separator positioned between the first and second electrode plates;
a first electrode tab directly attached to a first surface of the uncoated region of the first electrode collector;
a second electrode tab directly attached to a second surface of the uncoated region of the second electrode collector;
a first adiabatic plate attached only to a second surface of the uncoated region directly opposite to the first surface of the first electrode collector and directly contacting the separator,
wherein the first electrode tab and the coated region of the first electrode plate is entirely spaced from the first adiabatic plate,
wherein the first adiabatic plate does not cover the first electrode tab,
wherein a width of the first adiabatic plate is relatively smaller than a width of the uncoated region,
wherein the first adiabatic plate comprises a composite material tape,
wherein the composite material tape comprises an organic base and at least one inorganic element dispersed in the organic base,
the composite material tape comprises from about 20 to about 80 weight or volume percent inorganic elements, and
wherein the inorganic elements support the composite material tape when the organic base melts.

### Claim 2 (depends on 1)

The lithium secondary battery as claimed in claim 1, further comprising a second adiabatic plate attached to a second surface of the uncoated region of the second electrode collector, wherein the second adiabatic plate comprises an organic base and at least one inorganic element dispersed in the organic base.

### Claim 3 (depends on 2)

The lithium secondary battery as claimed in claim 2, wherein the second adiabatic plate comprises the composite material tape.

### Claim 4 (depends on 1)

The lithium secondary battery as claimed in claim 1, wherein the organic base of the composite material tape comprises a material selected from the group consisting of polyimide (PI), polyethyleneterephthalate (PET), polypropylene (PP), polyphenylene sulfide (PPS), polyethylene (PE) and polyphenyleneether (PPE).

### Claim 5 (depends on 1)

The lithium secondary battery as claimed in claim 1, wherein the inorganic element of the composite material tape comprises a material selected from the group consisting of oxides and nitrides, wherein the oxide is selected from the group consisting of Al2O3, TiO2, ZrO2, SiO2, MnO2 and MgO and mixtures thereof, and the nitride is selected from the group consisting of Si3N4, BN and mixtures thereof.

### Claim 6 (depends on 2)

The lithium secondary battery as claimed in claim 2, wherein a thickness of the second adiabatic plate is less than a thickness of the first adiabatic plate.

### Claim 7 (depends on 1)

The lithium secondary battery as claimed in claim 1, further comprising a first insulation layer covering the positive electrode tab and a second insulation layer covering the negative electrode tab.