Title:
表面処理銅箔とその製造方法、リチウムイオン二次電池用電極及びリチウムイオン二次電池
Document Type and Number:
Japanese Patent JP5554455
Kind Code:
B1
Abstract:
Provided are a surface-treated copper foil that has an improved suitability for welding resistance so as to achieve an enhanced productivity, a negative electrode for a lithium ion secondary battery, and a lithium ion secondary battery. The surface-treated copper foil is characterized in that: the sum (atomic %) of the carbon element content and nitrogen element content, said element contents being measured in the depth direction of the copper foil by X-ray photoelectron spectroscopy (XPS), attains the maximum value on the outermost surface; at the depth at which the sum (atomic %) of the carbon element content and nitrogen element content is halved compared to the maximum value thereof on the outermost surface, the decreasing rate of the sum (atomic %) of the carbon element content and nitrogen element content in the depth direction of the copper foil is 50%/nm or greater; and the surface resistivity that is defined in JIS-K7194:1994 is 2.5-40 mOmega.
Inventors:
Takahiro Tsuruta
Kensaku Shinozaki
Kensaku Shinozaki
Application Number:
JP2013541902A
Publication Date:
July 23, 2014
Filing Date:
July 22, 2013
Export Citation:
Assignee:
The Furukawa Electric Co., Ltd.
International Classes:
C23F11/00; H01M4/64; H01M4/66
Domestic Patent References:
| JP2011023303A | 2011-02-03 | |||
| JPH07258870A | 1995-10-09 | |||
| JP2011149098A | 2011-08-04 | |||
| JPS62270785A | 1987-11-25 | |||
| JP2013079419A | 2013-05-02 |
Attorney, Agent or Firm:
Takahisa Sato