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:
Jun. 30, 2020
Filed:
Nov. 26, 2018
Contemporary Amperex Technology Co., Limited, Ningde, Fujian, CN;
Meng Kang, Ningde, CN;
Tianquan Peng, Ningde, CN;
Yuliang Shen, Ningde, CN;
Jiazheng Wang, Ningde, CN;
Libing He, Ningde, CN;
Contemporary Amperex Technology Co., Limited, Ningde, CN;
Abstract
The disclosure relates to a negative electrode plate and a secondary battery comprising the same. Specifically, the present disclosure provides a negative electrode plate comprising a negative electrode current collector and a negative electrode layer coated on at least one surface of the negative electrode current collector, the negative electrode layer comprising a negative electrode active material, wherein the negative electrode active material comprises a graphite material, and the negative electrode layer fulfills the condition: 0.45≤7.8/D50+1.9*D50/(V)≤3.1, wherein D50 represents a volume distribution average particle diameter of particles of the negative electrode active material in micron; Vrepresents the OI value of the negative electrode layer. The negative electrode plate can allow that a secondary battery containing the same has the combination of high energy density, fast charge, and long cycle life.