Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Jeongbae Yoon

Hansu Kim

Gwi Ok Park

Suk Chin Lee

Sungreal Son

Joon-Sup Kim

Eunjun Park

SeungOk Lee

Donghan Youn

Dong Jae Chung

Jimin Kim

Jiyun Park

Sukjoon Hong

A method for reducing waste by recovering a lithium precursor including: a) mixing a waste lithium secondary battery positive electrode material with urea to prepare a first mixture; b) firing the first mixture to prepare a second mixture; and c) subjecting the second mixture to water washing to obtain lithium hydroxide.

Method for recovering lithium precursor from waste lithium secondary battery positive electrode material

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. The negative electrode active material particles have a maximum peak position by a Raman spectrum of more than 460 cmand less than 500 cm. Also provided are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.

Lithium-doped silicon-based oxide negative electrode active material, method of preparing the same, and negative electrode and secondary battery including the same

Growing community of inventors

Daejeon, South Korea

Jeongbae Yoon