Title:
リチウムイオン二次電池用正極活物質複合体の製造方法
Document Type and Number:
Japanese Patent JP6527201
Kind Code:
B2
Abstract:
To provide a method for manufacturing a positive electrode active material composite for a lithium ion secondary battery, which enables an efficient manufacturing process and which allows a resultant secondary battery to exhibit superior durability and an excellent rate characteristic.SOLUTION: A method for manufacturing a positive electrode active material composite for a lithium ion secondary battery, which includes particular lithium composite oxide particles composed of lithium composite oxide secondary particles (A) and having particular lithium-based polyanion particles (B) coating surfaces of the lithium composite oxide secondary particles, comprises the steps of: (X) firing mix powder including a predetermined compound to obtain lithium composite oxide secondary particles (A); (Y) granulating, by spray drying, a slurry including lithium-based polyanion primary particles obtained by subjecting a predetermined compound to a hydrothermal reaction and a carbon source and then, firing resultant granules, thereby obtaining granulated bodies (C) consisting of lithium-based polyanion particles (B) having carbon supported on their surfaces, and adjusted to 45-80 vol.% in porosity; and (Z) mixing the lithium composite oxide secondary particles (A) obtained in the step (X), and granulated bodies (C) obtained in the step (Y) while applying a compressive force and a shearing force thereto, thereby compounding the lithium composite oxide secondary particles (A) and the lithium-based polyanion particles (B) having carbon supported on their surfaces while collapsing the granulated bodies (C).SELECTED DRAWING: None
Inventors:
Satoshi Kameda
Satoshi Hatsumi
Hirayama Yuko
Takeshi Ogami
Satoshi Hatsumi
Hirayama Yuko
Takeshi Ogami
Application Number:
JP2017173213A
Publication Date:
June 05, 2019
Filing Date:
September 08, 2017
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
H01M4/525; H01M4/36; H01M4/505; H01M4/58
Domestic Patent References:
| JP2013149615A | ||||
| JP2014116296A | ||||
| JP2014118335A | ||||
| JP2011213587A | ||||
| JP2016081865A | ||||
| JP2011502332A | ||||
| JP2002075368A |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation