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:
Feb. 10, 2026
Filed:
Sep. 23, 2022
Ningde Amperex Technology Limited, Ningde, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde, CN;
Abstract
A negative electrode plate includes a current collector and an active substance layer provided on the current collector, where the active substance layer includes a silicon-based material, and a proportion by mass of element silicon in the active substance layer has a minimum value X1 and a maximum value X2 among different locations of a same area size, where a value of X1/X2 is M, and M≥0.7; and a weight loss rate of the active substance layer under thermogravimetric (TG) analysis within 800° C. has a minimum value Y1 and a maximum value Y2 among different locations of a same area size, where a value of Y1/Y2 is N, and N≥0.7. In this disclosure, the silicon-based material and a binder in the active substance layer are uniformly dispersed, improving C-rate performance and cycling performance of the electrochemical apparatus and reducing swelling of an electrode assembly.