Current collector, electrode structure and non-aqueous electrolyte battery or electrical storage device

Patent metadata

Field	Value
Publication number	US-2015294802-A1
Application number	US-201314414422-A
Country	US
Kind code	A1
Filing date	Jul 11, 2013
Priority date	Jul 13, 2012
Publication date	Oct 15, 2015
Grant date	—

Abstract

Provided is a current collector which has a PTC layer having room for thermal expansion at elevated temperature while securing sufficient conductivity at normal temperature. According to the invention, a current collector comprising a conductive base material, and a resin layer formed on at least one surface of the conductive base material is provided. The resin layer contains an organic resin and conductive particles. A deposition amount of the resin layer on the conductive base material is 0.5 to 20 g/m 2 . Rz (ten point average roughness) of the surface of the resin layer is 0.4 to 10 μm. Sm (average spacing of ruggedness) of the surface of the resin layer is 5 to 200 μm. An average of resistance of the resin layer measured by the two-terminal method is 0.5 to 50 Ω.

First claim

1 . A current collector comprising:
a conductive base material; and a resin layer formed on at least one surface of the conductive base material, wherein the resin layer contains an organic resin and conductive particles,
a deposition amount of the resin layer on the conductive base material is 0.5 to 20 g/m 2 ,
Rz (ten point average roughness) of the surface of the resin layer is 0.4 to 10 μm,
Sm (average spacing of ruggedness) of the surface of the resin layer is 5 to 200 μm, and
an average of resistance of the resin layer measured by the two-terminal method is 0.5 to 50 Ω.

2 . A current collector of claim 1 , wherein the organic resin is one or more kinds of resins selected from the group consisting of a fluorine-based resin, an olefin-based resin, an epoxy-based resin, an acrylic-based resin, a polyester-based resin, and a urethane-based resin.

3 . A current collector of claim 2 , wherein the fluorine-based resin has a carboxylic group or a carboxylic ester group.

4 . A current collector of claim 2 , wherein the olefin-based resin has a carboxylic group or a carboxylic ester group.

5 . A current collector of claim 2 , wherein the olefin-based resin includes at least one kind of acrylic ester and methacrylic ester.

6 . A current collector of claim 2 , wherein the olefin-based resin includes a polypropylene-based resin and a polyethylene-based resin.

7 . An electrode structure comprising:
the current collector of any one of claim 1 ; and an active material layer or an electrode material layer provided on the resin layer of the current collector.

8 . A non-aqueous electrolyte battery or electrical storage device comprising:
the current collector of claim 1 ; and an active material layer or an electrode material layer provided on the resin layer of the current collector.

Assignees

• Furukawa Electric Co Ltd
• Uacj Foil Corp
• Uacj Corp

Inventors

• Kato Osamu
• Morishima Yasumasa
• Ito Takayori
• Hara Hidekazu
• Iida Takahiro
• Kataoka Tsugio
• Inoue Mitsuya
• Yamabe Satoshi
• HONKAWA Yukiou
• Saito Sohei
• Yaegashi Tatsuhiro

Classifications

• H01G11/28

  arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives · CPC title

• H01G11/56

  Solid electrolytes, e.g. gels; Additives therein · CPC title

• H01G11/68 Primary

  characterised by their material · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title