# US 8,465,875 B2 · Three-dimensional network aluminum porous body for current collector, electrode using the aluminum porous body, and battery, capacitor and lithium-ion capacitor each using the electrode

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- Number: US 8,465,875 B2
- Document ID: US8465875B2
- Status: Granted
- Kind: B2
- Application number: 13/483,609
- Filed: 2012-05-30
- Published: 2012-11-15
- Granted: 2013-06-18
- Earliest claimed: 2011-02-18
- Assignees: Sumitomo Electric Industries, Ltd.; Sumitomo Electric Toyama Co., Ltd.
- Applicants: Akihisa Hosoe; Kazuki Okuno; Hajime Ota; Koutarou Kimura; Kengo Goto; Hideaki Sakaida; Junichi Nishimura
- Inventors: Akihisa Hosoe; Kazuki Okuno; Hajime Ota; Koutarou Kimura; Kengo Goto; Hideaki Sakaida; Junichi Nishimura
- Web page: https://patentgrep.com/patent/US8465875B2

## CPC

- H01R 43/16: for manufacturing contact members, e.g. by punching and by bending
- H01G 11/06: with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
- H01G 11/28: arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives
- H01G 11/70: characterised by their structure
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 4/667: {in the form of layers, e.g. coatings}
- H01M 4/762: {Porous or perforated metallic containers}
- H01M 4/80: Porous plates, e.g. sintered carriers
- H01M 4/806: {Nonwoven fibrous fabric containing only fibres}
- H01M 4/808: {Foamed, spongy materials}
- H01M 10/052: Li-accumulators
- Y02E 60/10: Energy storage using batteries
- Y02E 60/13: Energy storage using capacitors
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- Y10T 29/49204: Contact or terminal manufacturing
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- 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

It is an object of the present invention to provide a sheet-shaped three-dimensional network aluminum porous body for a current collector which is suitably used for electrodes for nonaqueous electrolyte batteries and electrodes for capacitors, an electrode and a capacitor each using the same. In such a three-dimensional network aluminum porous body for a current collector, the aluminum porous body has been made to have a compressive strength in a thickness direction of 0.2 MPa or more in order to efficiently fill an active material into the sheet-shaped three-dimensional network aluminum porous body.

## Claims

### Claim 1

An electrode comprising:
a sheet-shaped three-dimensional network aluminum porous body for a current collector, and
active material filled in the aluminum porous body,
wherein the aluminum porous body has a compressive strength in a thickness direction of 0.2 MPa or more whereas press-in pressure for filling the aluminum porous body with slurry including the active material is adjusted to 0.2 MPa or less, and
wherein a skeleton of the aluminum porous body has surface roughness (Ra) of 0.5 μm or more to thereby secure holding performance of the active material and 10 μm or less to thereby secure flowability of the slurry.

### Claim 2 (depends on 1)

The electrode according to claim 1, wherein the aluminum porous body has an average cell diameter of 50 μm or more and 800 μm or less.

### Claim 3 (depends on 2)

The electrode according to claim 2, wherein the average cell diameter is 200 μm or more and 500 μm or less.

### Claim 4 (depends on 1)

A nonaqueous electrolyte battery, comprising using the electrode according to claim 1.

### Claim 5 (depends on 2)

A nonaqueous electrolyte battery, comprising using the electrode according to claim 2.

### Claim 6 (depends on 3)

A nonaqueous electrolyte battery, comprising using the electrode according to claim 3.

### Claim 7 (depends on 1)

A capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 1.

### Claim 8 (depends on 2)

A capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 2.

### Claim 9 (depends on 3)

A capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 3.

### Claim 10 (depends on 1)

A lithium ion-capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 1.

### Claim 11 (depends on 2)

A lithium ion-capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 2.

### Claim 12 (depends on 3)

A lithium ion-capacitor using a nonaqueous electrolytic solution, comprising using the electrode according to claim 3.