- Patent Title: Negative electrode plate and secondary battery comprising the same
-
Application No.: US16199246Application Date: 2018-11-26
-
Publication No.: US10700344B2Publication Date: 2020-06-30
- Inventor: Meng Kang , Tianquan Peng , Yuliang Shen , Jiazheng Wang , Libing He
- Applicant: Contemporary Amperex Technology Co., Limited
- Applicant Address: CN Ningde
- Assignee: Contemporary Amperex Technology Co., Limited
- Current Assignee: Contemporary Amperex Technology Co., Limited
- Current Assignee Address: CN Ningde
- Agency: Law Offices of Liaoteng Wang
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@3ea18561
- Main IPC: H01M4/133
- IPC: H01M4/133 ; H01M4/583 ; H01M10/0525 ; H01M10/48 ; H01M4/02

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/(VOI)2≤3.1, wherein D50 represents a volume distribution average particle diameter of particles of the negative electrode active material in micron; VOI represents 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.
Information query