Title:
2次電池集電体用電解銅箔
Document Type and Number:
Japanese Patent JP5329696
Kind Code:
B1
Abstract:
PROBLEM TO BE SOLVED: To provide an electrolytic copper foil for a secondary battery collector, which has a small surface roughness, and in which formation of wrinkles after stretching and discolored streaks along the length direction is suppressed by making thickness in the width and length directions uniform.SOLUTION: An electrolytic copper foil for a secondary battery collector has 1.5% or less of difference in foil thickness in the width direction and is free from discolored streaks along the length direction on a surface of the copper foil, wherein the difference in foil thickness in the width direction is 1.4% or less. The electrolytic copper foil for the secondary battery collector has an average surface roughness Rzavg of 2.0 μm or smaller in the width direction on a matte surface and has 50% or less of variation in roughness (Rzmax-Rzmin)/Rzavg.
Inventors:
Tomoki Kobiki
Application Number:
JP2012120362A
Publication Date:
October 30, 2013
Filing Date:
May 28, 2012
Export Citation:
Assignee:
jx Nippon Mining & Metals Co., Ltd.
International Classes:
H01M4/64; C25D1/04; H01M4/66
Domestic Patent References:
| JP2007146289A | 2007-06-14 | |||
| JP2004026328A | 2004-01-29 | |||
| JPH0436489A | 1992-02-06 | |||
| JPH0436491A | 1992-02-06 | |||
| JPH0436494A | 1992-02-06 | |||
| JP2002004095A | 2002-01-09 | |||
| JP2009221592A | 2009-10-01 | |||
| JP2007146289A | 2007-06-14 | |||
| JP2004026328A | 2004-01-29 | |||
| JPH0436489A | 1992-02-06 | |||
| JPH0436491A | 1992-02-06 | |||
| JPH0436494A | 1992-02-06 |
Attorney, Agent or Firm:
Isamu Ogoshi