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:
Feb. 16, 2021
Filed:
Mar. 14, 2019
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Yao-Sheng Lai, Taipei, TW;
Kuei-Sen Cheng, Taipei, TW;
Jui-Chang Chou, Taipei, TW;
Chien-Ming Lai, Taipei, TW;
CHANG CHUN PETROCHEMICAL CO., LTD., Taipei, TW;
Abstract
Electrodeposited copper foils possessing properties for manufacturing lithium ion rechargeable secondary batteries are described, including methods of making the electrodeposited copper foils, methods for making the battery, and the resultant battery. The electrodeposited copper foils have a specific burst strength in the range of 1.5 to 4.3 kPa*m/g and a tensile strength in the range of 30 to 40 kgf/mm. The deposited side of the electrodeposited copper foil has a surface hardness in the range of 0.2 to about 2.0 Gpa by nano indentation analysis to resist wrinkling during pressing of the active materials on the electrodeposited copper foil. The foil exhibits reduced copper burr formation and burr size after clipping.