Method for manufacturing lithium secondary battery

摘要

A method for manufacturing a lithium secondary battery includes a first step of dispersing a conductive material in a solvent to prepare a conductive slurry; and a second step of mixing the prepared conductive slurry, a positive electrode active material and a binder to prepare a positive electrode mixture layer-forming slurry; wherein the first step is conducted so that a ratio of a particle size at 10% accumulation to a particle size at 90% accumulation, which are based on a particle size distribution measurement of the conductive material, is 10 or more and 200 or less.

主权项

1. A method for manufacturing a lithium secondary battery comprising:
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; wherein the dispersing treatment is conducted so that a ratio of a particle size at 90% accumulation of the conductive material to a particle size at 10% accumulation of the conductive material is 10 or more and 200 or less, and 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.