Cathode material containing two types of conductive materials and lithium secondary battery comprising the same

摘要

Provided is a cathode mix for a lithium secondary battery, comprising a cathode active material, a conductive material and a binder, wherein the cathode mix uses a mixture of a flake-like carbon material (a), and a spherical chain-like carbon material (b) in a weight ratio (a/b) of 0.01 to 1 as the conductive material; and a lithium secondary battery comprising the same. Use of the conductive material according to the present invention can achieve simultaneous improvements in conductivity and loading density of the cathode mix, provide excellent discharge characteristics even with increased loading amounts of the cathode mix, and secure performance uniformity between the battery cells.