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:
Apr. 28, 2026
Filed:
Oct. 27, 2023
Negative electrode active materials, preparation methods thereof, and lithium rechargeable batteries
Samsung Sdi Co., Ltd., Yongin-si, KR;
Dae-Hyeok Lee, Yongin-si, KR;
Jaehou Nah, Yongin-si, KR;
Youngugk Kim, Yongin-si, KR;
Yongseok Kim, Yongin-si, KR;
Heeyoung Chu, Yongin-si, KR;
Sojeong Yu, Yongin-si, KR;
Hyejin Kim, Yongin-si, KR;
Jaewon Kim, Yongin-si, KR;
SAMSUNG SDI CO., LTD., Yongin-si, KR;
Abstract
A negative electrode active material, including a silicon-carbon composite particle including a plurality of silicon nanoparticles and amorphous carbon, wherein the silicon-carbon composite particle includes closed pores therein, a pore volume of a surface of the silicon-carbon composite particle measured by a BJH method is less than about 0.02 cm/g, and a volume of the closed pores of the silicon-carbon composite particle calculated by Equation 1 is about 0.015 cm/g to about 0.05 cm/g.