METHOD FOR MANUFACTURING CATHODE ACTIVE MATERIAL LAYER AND METHOD FOR MANUFACTURING SECONDARY BATTERY

A method for manufacturing a cathode active material layer includes: a step of preparing a cathode slurry by mixing a cathode active material, a solid electrolyte, a conductive additive, a binder, and a solvent; a step of obtaining a parameter of the cathode slurry using a dynamic viscoelasticity measuring device; a step of determining the quality of a coating film based on the parameter; and a step of applying the cathode slurry that has been determined to be acceptable in the step of determining the quality of the coating film.