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:
Oct. 31, 2023
Filed:
Dec. 31, 2020
Contemporary Amperex Technology Co., Limited, Fujian, CN;
Jing Li, Ningde, CN;
Qingrui Xue, Ningde, CN;
Wei Li, Ningde, CN;
Zige Zhang, Ningde, CN;
Yang Zhang, Ningde, CN;
Xianwei Yang, Ningde, CN;
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Abstract
The present application relates to the field of battery, in particular to a positive electrode piece, an electrochemical device and an apparatus. The positive electrode piece of the present application includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer. The thickness D2 of one side of the conductive layer D2 satisfies 30 nm≤D2≤3 μm, the material of the conductive layer is aluminum or aluminum alloy, and the density of the conductive layer is 2.5 g/cmto 2.8 g/cm, and a primer layer containing a conductive material and a binder is also arranged between the current collector and the electrode active material layer.