Title:
ROLLED COPPER FOIL FOR LITHIUM ION BATTERY CURRENT COLLECTOR, AND LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/090195
Kind Code:
A1
Abstract:
Provided is a rolled copper foil for a lithium ion battery current collector, wherein the rolled copper foil has good adhesion to a negative electrode active material, gives less metal powder during ultrasonic welding, and is rust preventive. The rolled copper foil for a lithium ion battery current collector has a BTA film having a thickness of 0.6-4.6 nm on the surface of thereof, and satisfies the following relationships: 40≤wet tension [mN/m]+thickness of BTA film [nm]×10≤80; 0.01≤Arithmetic mean roughness Ra [μm]≤0.25; and wet tension [mN/m]≥35.
Inventors:
KUDO KATSUHIRO (JP)
Application Number:
PCT/JP2019/032905
Publication Date:
May 07, 2020
Filing Date:
August 22, 2019
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
H01M4/66; B21B1/22; B21B1/40; B21B3/00
Domestic Patent References:
| WO2014178327A1 | 2014-11-06 | |||
| WO2011055680A1 | 2011-05-12 |
Foreign References:
| JP2017186649A | 2017-10-12 | |||
| JP2017021888A | 2017-01-26 |
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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