Title:
COPPER FOIL SHOWING SLACK RESISTANCE
Document Type and Number:
Japanese Patent JP2018014332
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide copper foil showing marvelous deformation resistance (e.g. slack resistance, sagging resistance, and wrinkle resistance).SOLUTION: Copper foil has a glossy surface of which the surface roughness (Rz) falls in a range of 0.6-1.9 μm, and a rough surface of which the surface roughness (Rz) falls in a range of 0.6-1.9 μm. In addition, the copper foil has a color value Lvalue of the rough surface which is within a range of 12-35 according to Labcolor system, and a tensile strength of 34.1 kg/mmor less. A negative electrode comprises a negative electrode current collector having a negative electrode active material, in which the negative electrode current collector includes the copper foil. The negative electrode is applied to a lithium ion secondary battery.SELECTED DRAWING: Figure 7
Inventors:
CHENG KUEI-SEN
LAI YAO-SHENG
LIU YUEH-MIN
SHU ZUISHO
LAI YAO-SHENG
LIU YUEH-MIN
SHU ZUISHO
Application Number:
JP2017151508A
Publication Date:
January 25, 2018
Filing Date:
August 04, 2017
Export Citation:
Assignee:
CHANG CHUN PETROCHEMICAL CO LTD
International Classes:
H01M4/66; C25D1/00; C25D1/04; H01M4/133; H01M4/587; H01M10/0525; H01M10/0566
Domestic Patent References:
| JP2006103189A | 2006-04-20 | |||
| JP2004079523A | 2004-03-11 |
Attorney, Agent or Firm:
Patent corporation ssinpat