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. 20, 2021
Filed:
Sep. 23, 2019
Industrial Technology Research Institute, Hsinchu, TW;
Jhen-Rong Chen, Taoyuan, TW;
Chiu-Yen Chiu, Hsinchu County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An electrolyzed copper foil and a current collector of an energy storage device are provided. The electrolyzed copper foil includes a transition layer and a nano-twin copper layer formed on the transition layer. The transition layer has an equiaxial grain of a (111) plane having a volume ratio of 20-40%, a (200) plane having a volume ratio of 20-40%, and a (220) plane having a volume ratio of 20-40%. A thickness of the transition layer is 0.2 μm to 1.5 μm. The nano-twin copper layer has a columnar grain of the (111) plane having a volume ratio of more than 85%, and a thickness of the nano-twin copper layer is 3 μm to 30 μm.