Title:
METHOD FOR MANUFACTURING POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM ION BATTERY
Document Type and Number:
Japanese Patent JP2017107715
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a positive electrode active material for a lithium ion battery, which is enhanced in cycle life characteristic.SOLUTION: A method for manufacturing a positive electrode active material for a lithium ion battery comprises the steps of: (S01) producing a nickel cobalt manganese complex hydroxide; (S02) preparing a first mixture by mixing the nickel cobalt manganese complex hydroxide with silicon carbide so that the mole ratio of the silicon carbide to the nickel cobalt manganese complex hydroxide becomes 0.1 to 0.5 mol%; (S03) preparing a second mixture by heating the first mixture at a first temperature; (S04) preparing a third mixture by mixing the second mixture with a lithium carbonate; and (S05) producing a silicon carbide-containing lithium nickel cobalt manganese composite oxide by heating the third mixture at a second temperature higher than the first temperature.SELECTED DRAWING: Figure 2
Inventors:
SAKA HIDEYUKI
OKADA YUKIHIRO
OKADA YUKIHIRO
Application Number:
JP2015240089A
Publication Date:
June 15, 2017
Filing Date:
December 09, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M4/525; C01B32/956; C01G53/00; H01M4/36; H01M4/505
Attorney, Agent or Firm:
Fukami patent office