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:
Aug. 11, 2026
Filed:
Sep. 26, 2022
Ningde Amperex Technology Limited, Ningde City, CN;
Qunchao Liao, Ningde City, CN;
Hang Cui, Ningde City, CN;
Yuansen Xie, Ningde City, CN;
Chao Wang, Ningde City, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde City, CN;
Abstract
A negative electrode material includes silicon-based particles and graphite particles. In a case that a D/Dratio of the graphite particles is A and a D/Dratio of the silicon-based particles is B, the following conditional expressions (1) to (3) are satisfied: 0.1≤A≤0.65 (1); 0.3≤B≤0.85 (2); and B>A (3), where, Dis a particle diameter of particles measured when a cumulative volume fraction in a volume-based distribution reaches 50%, and Dis a particle diameter of particles measured when a cumulative number fraction in a number-based distribution reaches 50%. The present invention further provides a negative electrode plate, a lithium-ion secondary battery or electrochemical device containing the negative electrode plate, and an electronic device containing the lithium-ion secondary battery and/or electrochemical device.