Sk Innovation Co., Ltd.

Sk on Co., Ltd.

Jae Young Choi

Sang Min Park

Kwang Ho Lee

Ji Sun Lee

Min Suk Kang

Ji Hoon Choi

Sang Bok Kim

Ju Ho Chung

Kwang Ho Jeong

Yong Seok Lee

Jung Moon Sung

Sang Hye Shin

Jeong A Kim

Ji Yae Do

Min Cheol Beak

Seung Deok Seo

Sung Do Kim

Joon Hyung Moon

Do Ae Yu

Young Mo Yang

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

A cathode active material for a lithium secondary battery according to an embodiment of the present disclosures a plurality of composite particles, each of which comprises a lithium metal phosphate particle, and a carbon coating formed on at least a portion of a surface of the lithium metal phosphate particle. A standard deviation of thickness values of the carbon coating measured by an X-ray photoelectron spectroscopy (XPS) for five different composite particles of the plurality of composite particles is 15 nm or less.

Cathode active material for lithium secondary battery and lithium secondary battery including the same

Growing community of inventors

Daejeon, South Korea

Jae Young Choi