| abstract |
The present invention relates to a method for manufacturing a separator, a separator manufactured thereby, and an electrochemical device including the same, the method comprising the steps of: manufacturing a dispersion solution by mixing inorganic particles, a polymer binder, a polymer fiber, and a solvent; forming a non-woven fabric web having inorganic particles attached in gaps between the polymer fibers using the polymer binder by coating the dispersion solution on an upper surface of a substrate; and forming a non-woven fabric material by drying and compressing the non-woven fabric web, wherein micro-sized pores of existing non-woven fabric material are sufficiently filled with the organic particles and the polymer binder, thereby enabling a control for forming nano-sized pores, preventing the degradation of insulating properties in the electrochemical device, and improving the mechanical strength of the separator by introducing the inorganic particles into the pores of the non-woven fabric material. |