The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2021
Filed:
Mar. 20, 2020
Applicant:
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Inventors:
Assignee:
CHANG CHUN PETROCHEMICAL CO., LTD., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/66 (2006.01); H01M 4/04 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/667 (2013.01); H01M 4/0469 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); Y10T 428/12431 (2015.01); Y10T 428/12438 (2015.01);
Abstract
Surface-treated copper foils including a copper foil having a first side and an opposite-facing second side and two treatment layers disposed on the first side and the second side respectively are described. Each treatment layer provides a treated surface which exhibit a ten-point average roughness Rz in a range of 1.2 μm to 4.6 μm and a peak density (Spd) in a range of 490,000 to 1,080,000 mm. Additionally, the Cr content in each of the treatment layers is a range of 25 to 70 μg/dm. The surface-treated copper foils have excellent electrode active material coating properties, such as good adhesion and uniformity.