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. 19, 2025
Filed:
Aug. 16, 2022
Contemporary Amperex Technology (Hong Kong) Limited, Hong Kong, CN;
Yingjie Guan, Ningde, CN;
Yuzhen Zhao, Ningde, CN;
Qingyan Ma, Ningde, CN;
Yan Wen, Ningde, CN;
Qisen Huang, Ningde, CN;
Fenggang Zhao, Ningde, CN;
CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong, CN;
Abstract
The present application provides a silicon carbon negative electrode material, a negative electrode sheet including the same, a secondary battery, a battery module, a battery pack and a power consumption apparatus. A battery composed of a negative electrode prepared by the silicon carbon negative electrode material in the present application as a working electrode, metal lithium as a counter electrode and an electrolyte containing a lithium ion conductive substance may be charged and discharged, and in a case of drawing a relationship graph between a differential value dQ/dV obtained by differentiating a charging and discharging capacity Q by a working electrode potential V and the working electrode potential V, when energizing the negative electrode material in a direction of delithiation, a ratio of a maximum Y of dQ/dV between 400-480 mV to a maximum X of dQ/dV between 200-255 mV may be in a range of 3.5 to 15.