| abstract |
The present invention relates to adjusting the viscosity of the slurry by controlling the particle diameter of an inorganic material, which is one of the components of a slurry for preparing an electrochemical device, to a predetermined range, thereby significantly reducing the sedimentation speed of the inorganic particles and improving their dispersion. Therefore, the inorganic particle content is relatively increased and the inorganic particles can be uniformly distributed in the coating layer of the substrate, thereby preventing deterioration of battery performance. |