# US 7,745,050 B2 · Separator and non-aqueous electrolyte battery

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- Number: US 7,745,050 B2
- Document ID: US7745050B2
- Status: Granted
- Kind: B2
- Application number: 11/622,886
- Filed: 2007-01-12
- Published: 2007-08-02
- Granted: 2010-06-29
- Earliest claimed: 2006-01-13
- Assignees: Sony Corporation
- Inventors: Atsushi Kajita; Hiroyuki Suzuki; Hiroyuki Akashi; Kenichi Ogawa
- Web page: https://patentgrep.com/patent/US7745050B2

## CPC

- H01M 10/052: Li-accumulators
- H01M 50/417: Polyolefins
- H01M 50/426: Fluorocarbon polymers
- H01M 50/446: Composite material consisting of a mixture of organic and inorganic materials
- H01M 50/449: having a layered structure
- H01M 50/451: comprising layers of only organic material and layers containing inorganic material
- 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
- H01M 10/0565: Polymeric materials, e.g. gel-type or solid-type
- H01M 50/457: comprising three or more layers
- 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
- 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 separator having a structure in which a resin layer is formed at least on one principal plane of a base material layer, wherein the resin layer has an inorganic substance is provided. A non-aqueous electrolyte battery in which a cathode and an anode are arranged through the separator so as to face each other is also provided.

## Claims

### Claim 1

A non-aqueous electrolyte battery in which a cathode and an anode are arranged through a separator so as to face each other,
wherein said separator includes a resin layer formed at least on one principal plane of a base material layer of the separator,
wherein said base material layer of the separator is microporous,
wherein a piercing strength of said separator ranges from 100 to 1000 gf, and
wherein said resin layer includes an inorganic substance, wherein an open circuit voltage in a fully charged state per pair of said cathode and said anode ranges from 4.2 to 4.6 V.

### Claim 2 (depends on 1)

The battery according to claim 1, wherein a particle size of said inorganic substance ranges from 1 nm to 10 μm.

### Claim 3 (depends on 1)

The battery according to claim 1, wherein an air permeability of said separator ranges from 30 sec/100 cc to 1000 sec/100 cc.

### Claim 4 (depends on 1)

The battery according to claim 1, wherein an open circuit voltage in a fully charged state per pair of said cathode and said anode ranges from 4:25 to 4.6 V.

### Claim 5 (depends on 1)

The battery according to claim 1, wherein said base material layer of the separator includes a plurality of layers.

### Claim 6 (depends on 1)

The battery according to claim 1, wherein said resin layer is microporous.