Lg Energy Solution, Ltd.

Myeongjun Song

Suenghoon Han

Intae Park

Eunkyung Cho

Minsu Kim

Jaegil Lee

Changhoon Lee

Eui Tae Kim

Kyungsik Hong

Myeongseong Kim

Hyunah Cho

Ilto Kim

Seonghyo Park

Disclosed is a lithium secondary battery, and in particular, a lithium secondary battery capable of obtaining high energy density and long lifetime compared to conventional lithium secondary batteries by including positive electrode slurry having a particle size (based on D) of 15 μm to 50 μm and specifying a condition of an electrolyte liquid.

Lithium secondary battery

Disclosed is a lithium secondary battery, and in particular, to a lithium secondary battery capable of obtaining higher energy density and longer lifetime compared to existing lithium secondary batteries by specifying conditions of a positive electrode and an electrolyte liquid and additionally surface modifying a carbon material through heat treatment or including a separator including a molybdenum disulfide coating layer.

A lithium secondary battery, specifically, a lithium secondary battery. By specifically adjusting the porosity (%) and the mass of sulfur per unit area (mg/cm) of a positive electrode active material layer including a sulfur-carbon composite, the initial battery discharge capacity is improved, and thus a high energy density can be achieved.

Growing community of inventors

Daejeon, South Korea

Myeongjun Song