CATHODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERIES WITH HIGH CONDUCTIVITY AND METHOD OF PREPARING FOR THE SAME AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME

摘要

A lithium secondary battery includes a lithium metal oxide secondary particle core formed by agglomerating lithium metal oxide primary particles; and a conductive carbonaceous material formed by applying a thermoplastic polymer to an outer surface of the core and then thermally treating the core such that the thermoplastic polymer is melt and thermally decomposed, the conductive carbonaceous material being dispersed on the outer surface of the core and in pores among a plurality of the primary particles in the core. This cathode active material has improved conductivity, thereby improving high rate discharge characteristics and low temperature characteristics of a lithium secondary battery.