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:
Jan. 07, 2025
Filed:
Nov. 19, 2019
Ningde Amperex Technology Limited, Ningde, CN;
NINGDE AMPEREX TECHNOLOGY LIMITED, Ningde, CN;
Abstract
The present application relates to an anode active material and a preparation method thereof, and a device using the anode active material. The anode active material provided by the present application includes anode active particles having silicon element, a first conductive material and a second conductive material, wherein the first conductive material and the second conductive material form a three-dimensional conductive network structure, at least a portion of the anode active particles are accommodated in the three-dimensional conductive network structure, and a ratio of the total surface area of the first conductive material to the total surface area of the anode active particles is less than 1000. The capacity retention rate and expansion ratio of the anode active material with progression of the cycle are significantly improved.