Title:
リチウムイオン二次電池用正極活物質又はナトリウムイオン二次電池用正極活物質、並びにこれらの製造方法
Document Type and Number:
Japanese Patent JP6527200
Kind Code:
B2
Abstract:
To provide a cathode active material for lithium ion secondary battery or a cathode active material for sodium ion secondary battery capable of ensuring both high discharge capacity and high safety in an obtained lithium ion secondary battery consisting of layered lithium composite oxide or sodium ion secondary battery by preparing a slurry having stable workability without occurrence of a secular viscosity change in a cathode manufacturing step.SOLUTION: The present invention relates to a cathode active material for lithium ion secondary battery configured by compositing a specific lithium-based polyanion particle (B) and a layered lithium composite oxide particle only in a portion on a surface of a layered lithium composite oxide secondary particle A consisting of a lithium composite oxide particle represented by a formula (I): LiNiCoMnMOor a formula (II): LiNiCoAlMO. A peak intensity ratio ((peak intensity of (Ni2p)/(peak intensity of P2p+peak intensity of C1s)) based on X-ray photoelectron spectroscopy (XPS) exceeds 0.05 and is smaller than 0.4.SELECTED DRAWING: None
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Inventors:
Hirayama Yuko
Hiroki Yamashita
Takeshi Ogami
Hiroki Yamashita
Takeshi Ogami
Application Number:
JP2017154004A
Publication Date:
June 05, 2019
Filing Date:
August 09, 2017
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
H01M4/525; C01B25/45; C01G53/00; H01M4/36; H01M4/505; H01M4/58
Domestic Patent References:
| JP2014116296A | ||||
| JP2016178070A | ||||
| JP2012160420A | ||||
| JP2016072027A | ||||
| JP2013149615A | ||||
| JP2011502332A | ||||
| JP2011159421A | ||||
| JP2011210693A | ||||
| JP2011113783A |
Foreign References:
| WO2016047491A1 |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation