Method of preparing core-shell particles

Patent metadata

Field	Value
Publication number	US-10601035-B2
Application number	US-201816046078-A
Country	US
Kind code	B2
Filing date	Jul 26, 2018
Priority date	Jun 14, 2013
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A method of manufacturing core-shell particles comprises: filling a buffer into a rotor, which is extended in a longitudinal direction, and is accommodated so as to be spaced apart from an inner wall side of a non-rotational hollow cylinder extended in a longitudinal direction and then discharging air to outside; rotating the rotor after terminating the filling; forming a core-shell precursor by supplying raw materials from a first storage and a second storage, which comprise a material forming a core, into an interior of the cylinder in which the rotor rotates; supplying a shell material for coating the core to the interior of the cylinder in which a core-type precursor is formed; separating a liquid comprising core-shell particles formed through the supplying into a solid and a liquid; and drying the core-shell particles obtained through the separating.

First claim

What is claimed is:

1. A method of manufacturing core-shell particles, the method comprising:
filling a buffer into a rotor, which is extended in a longitudinal direction, and is accommodated so as to be spaced apart from an inner wall side of a non-rotational hollow cylinder extended in a longitudinal direction and then discharging air to outside of the rotor;
rotating the rotor after terminating the filling;
forming a core-shell precursor by supplying raw materials from a first storage and a second storage, which comprise a material forming a core, into an interior of the cylinder in which the rotor rotates;
supplying a shell material for coating the core to the interior of the cylinder in which a core-type precursor is formed;
separating a liquid comprising core-shell particles formed through the supplying of the shell material into a solid and a liquid; and
drying the core-shell particles obtained through the separating.

2. The method according to claim 1 , wherein lithium chloride and sodium carbonate; or lithium hydroxide and carbon dioxide; or aluminum carbonate and copper sulfate, as a pair of raw materials, are respectively stored in the first storage and the second storage.

3. The method according to claim 1 , wherein the shell material is an inorganic metal comprising copper, cobalt, or manganese; or is a polymer or an oligomer selected from the group consisting of polyethylene glycol, polyethylene oxide, polyethylene glycol methyl ether, polyethylene glycol dimethyl ether, polypropylene oxide, polyethylene, polypropylene, polyisobutylene, and polyvinylidene chloride.

Assignees

• Posco
• Res Inst Ind Science & Tech

Inventors

• Hong Jong Pal
• Song Jung Hoon
• Hwangbo Geun
• Choi Gyeong Rye

Classifications

• B01J2219/00094

  Jackets · CPC title

• H01M4/5825

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title

• B01J2208/00212

  Plates; Jackets; Cylinders · CPC title

• B01J19/18

  Stationary reactors having moving elements inside (B01J19/08, B01J19/26 take precedence) · CPC title

• H01M4/525 Primary

  of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy · CPC title