PREPARATION METHOD OF POROUS ELECTRODE ACTIVE MATERIAL, POROUS ELECTRODE ACTIVE MATERIAL PREPARED BY THE METHOD, POROUS ELECTRODE ACTIVE MATERIAL, ELECTRODE COMPRISING THE SAME AND SECONDARY BATTERY

摘要

The present invention provides a manufacturing method of a porous electrode active material. The manufacturing method includes the following steps: preparing an electrode active material mixture composition by scattering a water-dispersible polymer particle and an electrode active material primary particle in a solvent; forming an electrode active material mixture by spray-drying the electrode active material mixture composition; and thermally processing the electrode active material mixture.