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. 04, 2023
Filed:
Dec. 23, 2020
Positive electrode current collector, positive electrode piece, electrochemical device and apparatus
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Abstract
A positive electrode current collector, a positive electrode piece, an electrochemical device and an apparatus, where the positive electrode current collector includes a support layer and a conductive layer provided on the support layer, where a material of the conductive layer is aluminum or aluminum alloy, and a thickness Dof the conductive layer is 300 nm≤D≤2 μm; an elongation at break B of the support layer is 10,000%≥B≥12%, and a volume resistivity of the support layer is greater than or equal to 1.0×10Ω·m; when a tensile strain of the positive electrode current collector is 2%, a square resistance growth rate Tof the conductive layer is T≤10%. The positive electrode current collector provided in the present application can simultaneously take into account both high safety performance and electrical performance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile