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Title:
正極活物質用リチウム複合酸化物およびその製造方法、リチウム二次電池用正極活物質ならびにリチウム二次電池
Document Type and Number:
Japanese Patent JP6792836
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a lithium composite oxide which is useful as a positive electrode active material for a secondary battery.SOLUTION: A lithium composite oxide is represented by the composition formula, LiNaNiMnO(where 0.7≤x≤0.9 and x≤0.05) and has a maximum of aLi-NMR primary resonance peak in a range of 650-900 ppm. The half value width of the primary resonance peak is preferably 200-450 ppm. The lithium composite oxide is obtained by chemically inserting a lithium ion into a composite oxide represented by the composition formula, LiNaNiMnO(where 0.7≤x≤0.9 and y≤0.05).SELECTED DRAWING: Figure 3

Inventors:
Chiba Kazuki
Sakaebe Hinatsuri
Masahiro Kano
Application Number:
JP2016057411A
Publication Date:
December 02, 2020
Filing Date:
March 22, 2016
Export Citation:
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Assignee:
Honda motor industry stock company
National Institute of Advanced Industrial Science and Technology
International Classes:
H01M4/505; H01M4/525
Domestic Patent References:
JP2008152923A
JP2011228273A
JP2015092455A
JP2010232038A
JP2010260761A
JP2002313337A
Foreign References:
WO2015049796A1
Other References:
J.M.Paulsen et al,O2 Structure Li2/3[Ni1/3Mn2/3]O2: A New Layered Cathode Material for Rechargeable Lithium Batteries I. Electrochemical Properties,Journal of The Electrochemical Society,2000年,Vol.147, No.3,p.861-868
K.M.Shaju et al,Electrochemical Kinetic Studies of Li-Ion in O2-Structured Li2/3(Ni1/3Mn2/3)O2 and Li(2/3)+x(Ni1/3Mn2/3)O2 by EIS and GITT,Journal of The Electrochemical Society,2003年,Vol.150, No.1,p.A1-A13
Won-Sub Yoon et al,Local Structure and Cation Ordering in O3 Lithium Nickel Manganese Oxides with Stoichiometry Li[NixMn(2-x)/3Li(1-2x)/3]O2 NMR Studies and First Principles Calculations,Electrochemical and Solid-State Letters,2004年,Vol.7, No.7,p.A167-A171
Meng Jiang,High Voltage Study of Li-Excess Material as a Cathode Material for Li-Ion Batteries,The Electrochemical Society Interface,2008年,p.70-71
Tetiana Nosach,Nuclear Magnetic Resonance Studies on Lithium and Sodium Electrode Materials for Rechargeable Batteries,City University of New York(CUNY) CUNY Academic Works,2014年,p.76-91
L.S.Cahill et al,6Li NMR Studies of Cation Disorder and Transition Metal Ordering in Li[Ni1/3Mn1/3Co1/3]O2 Using Ultrafast Magic Angle Spinning,Chemistry of Materials,2005年,Vol.17,p.6560-6566
千葉一毅 他,合成条件の異なるリチウムニッケルマンガン酸化物の検討,第55回 電池討論会 講演要旨集,日本,2014年,2B18,p.152
千葉一毅 他,結晶構造制御によるLi2/3Ni1/3Mn2/3O2の電気化学特性改善,2014年電気化学秋季大会 講演要旨集,日本,2014年,1P23,p242
Zhonghua Lu et al,Superlattice Ordering of Mn, Ni, and Co in Layered Alkali Transition Metal Oxides with P2, P3, and O3 Structures,Chemistry of Materials,2000年,Vol.12,p.3583-3590
Attorney, Agent or Firm:
Haruka International Patent Office
Masato Shintaku
Yoshimoto Riki