METHOD FOR MANUFACTURING CATHODE FOR LITHIUM SECONDARY BATTERY, AND CATHODE

Disclosed herein relates to a method for manufacturing a positive electrode for a lithium secondary battery including: (S1) forming a positive electrode active material layer by applying a positive electrode slurry composition comprising lithium iron phosphate and a binder onto a current collector and drying it; (S2) rolling a positive electrode active material layer N times (N is an integer greater than or equal to 2), wherein in the rolling step, during the first rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 5% to 15%, and during rolling after the first rolling, the rate of change in thickness of a positive electrode active material layer according to Equation 1 below is 3.5% or less. Rate of change in thickness % = thickness of K − 1 times rolled positive electrode active material layer − thickness of K times rolled positive electrode active material layer × 100 / thickness of positive electrode active material layer before rolling step [0002] In Equation 1, K is an integer greater than or equal to 1 and smaller than or equal to N.