Title:
リチウムイオン二次電池用正極活物質およびその製造方法
Document Type and Number:
Japanese Patent JP7412883
Kind Code:
B2
Abstract:
To provide a lithium nickel composite oxide which enables the development of such battery characteristics that a high capacity and a high output are shown in the case of being used for a lithium ion secondary battery.SOLUTION: A positive electrode active material for a lithium ion secondary battery comprises a lithium nickel composite oxide represented by the general formula, LizNi1-x-yCoxMyO2 (where 0.01≤x≤0.19, 0.01≤y≤0.10 and 0.95≤z≤1.10, and M includes Al or a combination of Al and at least one element selected from Mn, V, Mg, W, Mo, Nb and Ti). As to the lithium nickel composite oxide, when a ratio [mM/(mNi+mCo)] of a substance amount of M to a sum total of substance amounts of Ni and Co in the lithium nickel composite oxide is represented by α[%] on a percentage basis, a c-axis lattice constant determined from Rietveld analysis of an X-ray diffraction chart on the lithium nickel composite oxide is smaller than a numerical value β determined by the following formula (1): β=0.0004347α+1.4201-0.02(x+y).SELECTED DRAWING: None
Inventors:
Kentaro Kondo
Tomoko Nakayama
Satoshi Komukai
Tomoko Nakayama
Satoshi Komukai
Application Number:
JP2018246679A
Publication Date:
January 15, 2024
Filing Date:
December 28, 2018
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
Panasonic Energy Co., Ltd.
Panasonic Energy Co., Ltd.
International Classes:
H01M4/525; C01G53/00; H01M4/505
Foreign References:
| WO2015008582A1 | ||||
| WO2014010448A1 |
Attorney, Agent or Firm:
Yoshitaka Oshida