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. 17, 2025
Filed:
Mar. 09, 2022
Negative electrode material, negative electrode plate, electrochemical device, and electronic device
Applicant:
Ningde Amperex Technology Limited, Fujian, CN;
Inventors:
Assignee:
Ningde Amperex Technology Limited, Ningde, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/587 (2010.01); H01M 4/04 (2006.01); H01M 4/1393 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/66 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/587 (2013.01); H01M 4/0404 (2013.01); H01M 4/1393 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 4/386 (2013.01); H01M 4/661 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract
A negative electrode material includes a silicon-based material and a carbon material. Peaks with a shift range of 1255˜1355 cmand 1575˜1600 cmin a Raman spectrum of the carbon material are a D peak and a G peak respectively. Peaks with a shift range of 1255˜1355 cmand 1575˜1600 cmin a Raman spectrum of the silicon-based material are the D peak and the G peak respectively. A scattering peak intensity ratio of D versus G peaks of the carbon material is A, and a scattering peak intensity ratio of D versus G peaks of the silicon-based material is B. 0.15≤A≤0.9, 0.8≤B≤2.0, and 0.2<B−A<1.8.