METHOD FOR COATING A LITHIUM SECONDARY BATTERY'S SUBSTRATE WITH INORGANIC PARTICLES AND LITHIUM SECONDARY BATTERY CONTAINING SUBSTRATE COATED BY THE METHOD

摘要

PURPOSE: A coating method of a substrate for a lithium secondary battery is provided to reduce costs by not needing a slurry-drying step after coating and to improve storage and maintenance convenience. CONSTITUTION: A coating method of a substrate for a lithium secondary battery using inorganic particles includes a step of forming charged inorganic particles (S10); a step of transcribing the charged inorganic particle on the substrate to form a coating layer (S30); and a step of immobilizing the coating layer with heat and pressure (S30). The inorganic particle additionally includes a surface-refined layer formed on the surface of the inorganic particle. The average particle diameter of the inorganic particle is 0.001-100 micron. The thickness of the coating layer is 1-250 micron. [Reference numerals] (S10) Charging step of forming charged inorganic particles; (S20) Transcribing step of forming a coating layer by transcribing the inorganic particles on the substrate for a lithium secondary battery; (S30) Immobilizing step of fixing the coating layer with heat and pressure