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. 21, 2025
Filed:
Sep. 12, 2021
Applicant:
Ningde Amperex Technology Limited, Ningde, CN;
Inventor:
Chenxi Jiang, Ningde, CN;
Assignee:
Ningde Amperex Technology Limited, Ningde, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/0562 (2009.12); H01M 4/02 (2005.12); H01M 4/38 (2005.12); H01M 4/505 (2009.12); H01M 4/525 (2009.12); H01M 10/0585 (2009.12);
U.S. Cl.
CPC ...
H01M 10/0562 (2012.12); H01M 4/386 (2012.12); H01M 4/505 (2012.12); H01M 4/525 (2012.12); H01M 10/0585 (2012.12); H01M 2004/027 (2012.12); H01M 2004/028 (2012.12); H01M 2300/008 (2012.12);
Abstract
An electrochemical apparatus includes a positive electrode plate including a positive electrode active material layer; a negative electrode plate including a negative electrode active material layer; and a separator disposed between the positive electrode plate and the negative electrode plate. A mass ratio of fluorine to sulfur in a surface layer of the positive electrode active material layer is A, and a mass ratio of fluorine to sulfur in a surface layer of the negative electrode active material layer is B, where 30≤A≤300, and 5≤B≤50.