Lg Energy Solution, Ltd.

Seoul National University

Chan Yeong Koong

Kihyun Kim

Soohyun Kim

Kwonnam Sohn

Jong-Chan Lee

Daun Jeong

The present disclosure relates to a positive electrode active material, a preparation method thereof, and a lithium-sulfur battery including the same, more particularly to a positive electrode active material including a particulate structure of a core-shell structure which comprises a core part and a shell part covering the whole surface or a part of the surface of the core part, wherein the core part comprises a sulfur compound, and the shell part comprises a polythiophene acetic acid-polyethylene glycol graft copolymer. The positive electrode active material of the present disclosure has excellent electrochemical reactivity and adsorbs lithium polysulfide to improve capacity and lifetime characteristics of the lithium-sulfur battery.

Growing community of inventors

Seoul, South Korea

Chan Yeong Koong