Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Seung Deok Seo

Kwang Ho Jeong

Ji Sun Lee

Yong Seok Lee

Jeong A Kim

Jae Young Choi

Do Ae Yu

Sung Do Kim

An anode active material for a secondary battery includes an anode current collector, and an anode active material layer on at least one surface of the anode current collector. The anode active material layer includes an anode active material and an anode binder. The anode active material includes a composite particle that includes a silicon-based active material particle and a solid electrolyte interphase (SEI) layer formed on at least a portion of a surface of the silicon-based active material particle. An F-density defined by Equation 1 is 23% or less.

Anode for lithium secondary battery, method of manufacturing the same and lithium secondary battery including the same

An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes an anode active material and an anode binder. The anode active material includes a plurality of composite particles, each of the composite particles include a silicon-based active material particle, and a solid electrolyte interphase (SEI) layer formed on at least a portion of a surface of the silicon-based active material particle. A relative standard deviation of thickness values of the SEI layer of the composite particles, which are measured by an X-ray photoelectron spectroscopy (XPS) from 9 different composite particles among the plurality of composite particles after repeating 100 cycles of charging and discharging is 20% or less.

Anode for secondary battery, method of fabricating the same and lithium secondary battery including the same

Growing community of inventors

Daejeon, South Korea

Seung Deok Seo