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:
Sep. 29, 2026
Filed:
Jul. 27, 2022
Lg Energy Solution, Ltd., Seoul, KR;
Semi Park, Daejeon, KR;
Sun Young Shin, Daejeon, KR;
Ilgeun Oh, Daejeon, KR;
Su Min Lee, Daejeon, KR;
Yong Ju Lee, Daejeon, KR;
LG ENERGY SOLUTION, LTD., Seoul, KR;
Abstract
A negative electrode active material including: silicon-containing composite particles including (a) SiO, wherein 0<x<2, (b) pores, and (c) a Mg compound or a Li compound; an outer carbon layer present on the surface of the silicon-containing composite particle; and an inner carbon layer present inside the pores, in which a BET specific surface area of the negative electrode active material is 3 m/g to 15 m/g, a negative electrode including the same, a secondary battery including the negative electrode and a method for preparing the negative electrode active material.