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:
Dec. 23, 2025
Filed:
Jul. 23, 2021
SK on Co., Ltd., Seoul, KR;
Eunjun Park, Daejeon, KR;
Joon-Sup Kim, Daejeon, KR;
Gwi Ok Park, Daejeon, KR;
Jeongbae Yoon, Daejeon, KR;
Suk Chin Lee, Daejeon, KR;
Hansu Kim, Seoul, KR;
Donghan Youn, Namyangju-si, KR;
Dong Jae Chung, Seoul, KR;
SK On Co., Ltd., Seoul, KR;
Abstract
Provided are a negative electrode active material which includes negative electrode active material particles which includes a silicon oxide (SiO, 0<x≤2); and at least one lithium silicate selected from LiSiO, LiSiO, and LiSiOin at least a part of the silicon oxide. A signal generated in a region of 200 to 600 cmaccording to a Raman spectrum is subjected to deconvolution into three peaks, which are set to peak A, peak B, and peak C from lowest to highest of an absolute value of a wavenumber. Also disclosed are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.