University-Industry Cooperation Group of Kyung Hee University

Korea Electrotechnology Research Institute

Ha Young Lim

Jeong Hee Choi

Sang Min Lee

Gum Jae Park

Min Sik Park

The present invention relates to an anode active material, a nonaqueous lithium secondary battery comprising the same, and a preparation method therefor, and the purpose of the present invention is to improve high-rate charging characteristics without deterioration of charging and discharging efficiency and lifetime characteristics when applying an amorphous carbon coating layer as the anode active material of the nonaqueous lithium secondary battery, wherein the amorphous carbon coating layer comprising MoPx particles composed of MoP and MoPis formed on the surface of a carbon-based material, thereby reducing resistance when intercalating lithium ions into the surface of the carbon-based material, and improving reactivity and structural stability of the surface. The anode active material according to the present invention comprises a carbon-based material, and an amorphous carbon coating layer comprising MoPx particles composed of MoP and MoPformed on the surface of the carbon-based material.

Anode active material, preparation method therefor, and nonaqueous lithium secondary battery comprising same anode active material, and preparation method therefor

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Bucheon, South Korea

Ha Young Lim