NOVELTY - The method comprises preparing a first slurry by a dispersing treatment, where a conductive material of conductive carbon fine particles is dispersed in a solvent, preparing a second slurry by mixing the first slurry, a positive electrode active material and a binder, imparting the second slurry on a positive electrode current collector to form a positive electrode mixture layer, and forming a lithium secondary battery provided with the positive current collector on which the positive electrode mixture layer is formed.    USE - The method is useful for manufacturing a lithium secondary battery, which is useful in a vehicle (all claimed) such as a hybrid automobile, a plug-in hybrid vehicle, a hybrid vehicle, an electric vehicle and a fuel cell vehicle and in a personal computer.    ADVANTAGE - The method ensures efficient manufacture of the lithium secondary battery with reduced size, lightweight, high energy density and improved performance and IV resistance.    DETAILED DESCRIPTION - The method comprises preparing a first slurry by a dispersing treatment, where a conductive material of conductive carbon fine particles is dispersed in a solvent, preparing a second slurry by mixing the first slurry, a positive electrode active material and a binder, imparting the second slurry on a positive electrode current collector to form a positive electrode mixture layer, and forming a lithium secondary battery provided with the positive current collector on which the positive electrode mixture layer is formed. The dispersing treatment is conducted so that a ratio of a particle size at 10% accumulation of the conductive material to a particle size at 90% accumulation of the conductive material is 20-50. The particle size at 10% accumulation of the conductive material and the particle size at 90% accumulation of the conductive material are based on a particle size distribution measurement. The particle size at 90% accumulation is 5-60 mu m. The particle size at 90% accumulation of the conductive material is one half or more and twice or less a particle size at 50% accumulation of the positive electrode active material. An acetylene black, a furnace black, a Ketjen black (RTM: Unique electro-conductive carbon black), a channel black, a lamp black and a thermal black are used as the conductive material. The first slurry is prepared by operating a homogenizer under a condition of a shear speed of greater than or equal to 30000 s-1. The second slurry is adjusted so that a viscosity of the second slurry is 300-5000 mPa.s and a ratio of the conductive material contained in a positive electrode layer is 2-8 wt.%. The solvent is removed from the positive electrode mixture layer so that a ratio of the conductive material contained in the positive electrode layer is 2-8 wt.%. The particle size distribution measurement is carried out by a laser diffraction/light scattering method. An INDEPENDENT CLAIM is included for a lithium secondary battery.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a lithium secondary battery.    Flat rectangular parallelepiped case body (52)    Cap (54)    Positive electrode terminal (70)    Exposed end (74)    Wound electrode body. (80)