Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2022117956
Kind Code:
A
Abstract:
To provide a positive electrode active material for a non-aqueous electrolyte secondary battery that can improve output characteristics at low SOC when the non-aqueous electrolyte secondary battery is configured.SOLUTION: There is provided a positive electrode active material for a non-aqueous electrolyte secondary battery, which has a layered structure and contains secondary particles formed by aggregation of a plurality of primary particles containing a lithium-transition metal composite oxide containing lithium and nickel. The smoothness of the secondary particles is greater than 0.73, and the circularity of the secondary particles is greater than 0.83. The secondary particles contain cobalt, have a first region with a depth of 150 nm from the particle surface and a second region with a depth of 10 nm or less from the particle surface, and the total number of moles of metal elements other than lithium is greater in the second region than in the first region.SELECTED DRAWING: None
Inventors:
KAWAI KENTA
MIYAMOTO KAE
SHIRAISHI TAIGA
YOSHIDA YASUHIRO
MURAYAMA MASAHIRO
MATSUI TOMOYA
MIYAMOTO KAE
SHIRAISHI TAIGA
YOSHIDA YASUHIRO
MURAYAMA MASAHIRO
MATSUI TOMOYA
Application Number:
JP2022009253A
Publication Date:
August 12, 2022
Filing Date:
January 25, 2022
Export Citation:
Assignee:
NICHIA KAGAKU KOGYO KK
International Classes:
H01M4/525; C01G53/00
Attorney, Agent or Firm:
Yamato Kento
Junichi
Yasuo Yanagibashi
Kojidate Shoji
Junichi
Yasuo Yanagibashi
Kojidate Shoji