DEVICE FOR PREPARING CORE-SHELL PARTICLES AND METHOD FOR PREPARING CORE-SHELL PARTICLES BY USING SAME

摘要

Disclosed are an apparatus for manufacturing core-shell particles, the apparatus including: a reactor including an irrotational hollow cylinder extended in a longitudinal direction, a rotor accommodated so as to be spaced apart from an inner wall side of the cylinder and extended in a longitudinal direction, a driving part connected to one end of the rotor and rotating the rotor, a first raw material inlet and a second raw material inlet respectively formed so as to be connected to the interior of the cylinder at an external circumferential side of one end of the cylinder with respect to a longitudinal direction of the cylinder, an outlet formed at another end of the cylinder so as to be connected to the interior of the cylinder in an opposite direction from the first raw material inlet and the second raw material inlet, at least one shell material inlet formed at an external circumferential side of the cylinder and supplying a shell material to the interior of the cylinder, a heat exchange material moving path formed between an external circumferential side and an interior circumference of the cylinder and providing a moving path of a heat exchange material, a heat exchange material inlet connected to the heat exchange material moving path and serving to inject a heat exchange material, and a heat exchange material outlet connected to the heat exchange material moving path and discharging a heat exchange material; a first storage connected to the first raw material inlet of the reactor; a second storage connected to the second raw material inlet of the reactor; a solid-liquid separator connected to the outlet of the reactor and separating a product discharged from the outlet into solid particles and a liquid; and a drier connected to the solid-liquid separator and drying solid particles separated by the solid-liquid separator, and a method of manufacturing the core-shell particles using the same. According to the present invention, an apparatus for manufacturing core-shell particles, particularly core-shell particles used in a positive electrode active material of lithium rechargeable batteries, in order to form a shell on a core by injecting a gas, liquid, and/or solid material in the presence of a liquid-type solvent, is provided. In particular, according to the present invention, the core-shell particles can be prepared by manufacturing a positive electrode active material precursor into a core type and then coating the same in one reactor without a separate coating process.