Sk on Co., Ltd.

Ulsan National Institute of Science and Technology

Eunjun Park

Joon-Sup Kim

Hansu Kim

Gwi Ok Park

Donghan Youn

Dong Jae Chung

Jae Phil Cho

Suk Chin Lee

Yoon Kwang Lee

Jeongbae Yoon

Jaekyung Sung

Tae Yong Lee

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

Provided are a negative electrode active material including a three-dimensional composite. The three-dimensional composite includes secondary particles containing a silicon carbide-based (SiCx, 0<x≤1) nanosheet having a bent portion and amorphous carbon. Also provided are a method of producing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.

Composite negative electrode active material, method of producing the same, and negative electrode and lithium secondary battery including the same

Provided are a negative electrode active material which includes a 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 has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less. Also provided are a negative electrode and a lithium secondary battery including the same.

Growing community of inventors

Daejeon, South Korea

Eunjun Park