Title:
METHOD FOR MANUFACTURING LITHIUM PHOSPHATE-BASED POSITIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
Japanese Patent JP2018032567
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a lithium phosphate-based positive electrode active material, by which superior battery characteristics can be developed without a hydrothermal reaction step.SOLUTION: A method for manufacturing a lithium phosphate-based positive electrode active material without a hydrothermal reaction step comprises the steps of (I) mixing a solution A and a solution B to obtain a mixture solution X, provided that (the solution A) is a solution containing a lithium compound, a phosphate compound and water A, in which the mole ratio (Li:P) of lithium to phosphorus is 1:x(x=1-3), and the mole ratio (water A:Li) of the water A to lithium is 80:1 to 1400:1, and (the solution B) is a solution containing a manganese compound and/or an iron compound, and water B, in which the mole ratio (water B:(Mn+Fe)) of a quantity of the water B to a total quantity of manganese and iron is 13:1 to 100:1, (II) adding an alkali to the resultant mixture solution X to obtain a slurry liquid Y of which the mole ratio (Alkali:(Mn+Fe)) of a quantity of the alkali to a total quantity of manganese and iron is 3:2 to 4:1; and (III) separating the resultant slurry liquid Y and firing a solid content.SELECTED DRAWING: None
Inventors:
HATSUMORI TOMOKI
OGAMI TAKEAKI
OGAMI TAKEAKI
Application Number:
JP2016165340A
Publication Date:
March 01, 2018
Filing Date:
August 26, 2016
Export Citation:
Assignee:
TAIHEIYO CEMENT CORP
International Classes:
H01M4/58; C01B25/45
Domestic Patent References:
| JP2009029663A | 2009-02-12 |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto