Title:
リチウム二次電池電極材料の製造方法、リチウム二次電池の製造方法
Document Type and Number:
Japanese Patent JP6920045
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide: a lithium-niobium solution improved in storage stability; and a technique which can suppress the reduction in discharge capacity and increase the production efficiency concerning a lithium secondary battery electrode and its material.SOLUTION: A method for manufacturing a lithium secondary battery electrode material and its related technique are provided. The method comprises: the step 1 of mixing an aqueous solution with a lithium salt dissolved therein, particles A composed of fine particles including at least one of a niobium oxide and a niobium hydroxide, of which the mode diameter (highest-frequency particle diameter) according to a dynamic light scattering method is 5 to 200 nm, and a lithium secondary battery positive electrode active material to obtain slurry; the step 2 of recovering powder with niobium and lithium deposited on the surface of each particle B of the lithium secondary battery positive electrode active material by applying an evaporation drying method to the slurry; and the step 3 of firing the powder at 150 to 700°C to form a lithium niobate layer on the surface of each particle B of the lithium secondary battery positive electrode active material.SELECTED DRAWING: None
Inventors:
Daisuke Abe
Application Number:
JP2016205904A
Publication Date:
August 18, 2021
Filing Date:
October 20, 2016
Export Citation:
Assignee:
dowa Electronics Co., Ltd.
International Classes:
H01M4/36; H01M4/13; H01M4/62; H01M10/0562; H01M10/0565
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Attorney, Agent or Firm:
Aniya Setsuo
Okuyama Tomohiro
Okuyama Tomohiro