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:
Dec. 17, 2024
Filed:
Oct. 30, 2019
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Yao-Sheng Lai, Taipei, TW;
Jui-Chang Chou, Taipei, TW;
CHANG CHUN PETROCHEMICAL CO., LTD., Taipei, TW;
Abstract
Electrodeposited copper foils are described having improved thermal properties. The copper foils include a drum side and deposited side where both sides have a roughness Rz lower than 2 μm and wherein, when the electrodeposited copper foil is subjected to a thermal gravimetric analysis (TGA), the electrodeposited copper foil exhibits a primary weight increase of 105 wt. % when a primary temperature (T) is reached during the TGA, wherein the Tis in a range of 350° C. to 501° C. The TGA characterization comprises heating at a rate of 5° C./min and an air flow at a rate of 95 mL/min. Ultrasonic welding of the copper foils to nickel foils provides an excellent weld with low detachment providing a good mechanical and electrical contact for applications such as in lithium-ion secondary batteries.