Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2019186175
Kind Code:
A
Abstract:
To provide a positive electrode active material having a high charge/discharge capacity while keeping high safety and high durability and improved in output characteristic; and a manufacturing method which allows the positive electrode active material to be manufactured readily in an industrial scale.SOLUTION: A positive electrode active material for a nonaqueous electrolyte secondary battery comprises a lithium-nickel-manganese-cobalt-niobium composite oxide and includes secondary particles resulting from agglomeration of primary particles. The lithium-nickel-manganese-cobalt-niobium composite oxide is represented by the general formula (1), LiNiMnCoNbO(where 0.20≤a≤0.50, 0.20≤b≤0.60, 0.02≤c≤0.08, 1.05≤d≤1.20 and (1-a-b-c)/a≤2). In the lithium-nickel-manganese-cobalt-niobium composite oxide, niobium solid-dissolves in the primary particles.SELECTED DRAWING: None
Inventors:
YAMAUCHI MITSURU
KOMUKAI TETSUSHI
ITO YASUSHI
KOMUKAI TETSUSHI
ITO YASUSHI
Application Number:
JP2018079475A
Publication Date:
October 24, 2019
Filing Date:
April 17, 2018
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
H01M4/525; C01G53/00; H01M4/505
Domestic Patent References:
| JP2015111560A | 2015-06-18 | |||
| JP2009140787A | 2009-06-25 |
Foreign References:
| WO2018043669A1 | 2018-03-08 | |||
| WO2014034430A1 | 2014-03-06 |
Attorney, Agent or Firm:
Yoshitaka Oshida