Samsung Sdi Co., Inc.

Sejong University

Mk Electron Co., Ltd.

Yulsang Lee

Jaehyuk Kim

Soonsung Suh

Jaemyung Kim

Jongsoo Cho

Kibuem Kim

Sunghwan Hong

Jeongtae Kim

Seungwhan Lee

A negative electrode active material includes a silicon-based alloy represented by Si-M-M-C&#x2014;B, wherein Mand Mare different from each other and are each independently selected from magnesium, aluminum, titanium, vanadium, chromium, iron, cobalt, nickel, copper, zinc, gallium, germanium, manganese, yttrium, zirconium, niobium, molybdenum, silver, tin, tantalum, and tungsten. In the silicon-based alloy, Si is in a range of about 50 at % to about 90 at %, Mis in a range of about 10 at % to about 50 atom %, and Mis in a range of 0 at % to about 10 at %, based on a total number of Si, M, and Matoms. C is in a range of about 0.01 to about 30 parts by weight, and B is in a range of 0 to about 5 parts by weight, based on a total of 100 parts by weight of Si, M, and M.

Negative electrode active material and method of preparing the same

Growing community of inventors

Dangjin-si, South Korea

Yulsang Lee