Title:
負極集電体用銅箔の製造方法
Document Type and Number:
Japanese Patent JP5898616
Kind Code:
B2
Abstract:
An object of the present invention is to provide a method for manufacturing a copper foil for a negative electrode current collector (specifically, copper foil for a negative electrode current collector of a lithium ion secondary battery) more excellent in discoloration resistance to improve charge/discharge cycle life of a secondary battery. To achieve the object, a method for manufacturing a copper foil for a negative electrode current collector of a secondary battery subjecting the copper foil to rust-proofing treatment, the method characterized in that the copper foil is rust-proofing treated with a chromate-treatment solution having pH in the range from 3.5 to 7.0 to form a chromate film on the surface of the copper foil is employed.
Inventors:
Satoshi Maeda
Torikai Satoshi
Tetsuya Kaneko
Yusuke Ozaki
Tomonaga Sakiko
Torikai Satoshi
Tetsuya Kaneko
Yusuke Ozaki
Tomonaga Sakiko
Application Number:
JP2012522651A
Publication Date:
April 06, 2016
Filing Date:
June 29, 2011
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
C23C22/68; C23C22/24; C23C22/82; C25D9/08; H01M4/66
Domestic Patent References:
| JPH11158652A | 1999-06-15 | |||
| JPH11273683A | 1999-10-08 | |||
| JP2007332418A | 2007-12-27 | |||
| JPH02294490A | 1990-12-05 | |||
| JPH11158652A | 1999-06-15 | |||
| JP2002507048A | 2002-03-05 | |||
| JP2006516818A | 2006-07-06 | |||
| JPS60153972A | 1985-08-13 | |||
| JP2011127226A | 2011-06-30 |
Foreign References:
| WO2006137240A1 | 2006-12-28 | |||
| US3127288A | 1964-03-31 | |||
| US3053691A | 1962-09-11 |
Attorney, Agent or Firm:
Katsuhiro Yoshimura
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