公开(公告)号：US20150188136A1

公开(公告)日：2015-07-02

申请号：US14411192

申请日：2013-07-01

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Kensaku Mori ,  Masanori Takagi ,  Koji Yamaji ,  Takehide Honma ,  Ryozo Ushio

IPC: H01M4/525 ,  C01G53/00 ,  H01M10/052

CPC classification number: H01M4/525 ,  C01G53/006 ,  C01G53/42 ,  C01G53/50 ,  C01G53/66 ,  C01P2004/62 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/131 ,  H01M10/052 ,  H01M2004/028 ,  H01M2220/30

Abstract: A positive electrode active material is provided that has a high capacity, a low irreversible capacity, an excellent initial charge/discharge efficiency, and excellent rate characteristics. This positive electrode active material comprises a hexagonal lithium nickel complex oxide having a layer structure and represented by the general formula LixNi1-y-zCoyMzO2 (0.98≦x≦1.04, 0.25≦y≦0.40, 0≦z≦0.07, and M is at least one element selected from Al, Ti, Mn, Ga, Mg, and Nb), wherein a lithium occupancy rate in a lithium main layer as obtained by Rietveld analysis from the x-ray diffraction pattern is at least 98.7%, and a crystallite diameter as calculated from the peak for the (003) plane in x-ray diffraction is 50 to 300 nm.

Abstract translation: 提供了具有高容量，低不可逆容量，优异的初始充电/放电效率和优异的速率特性的正极活性材料。 该正极活性物质包括具有层结构并由通式LixNi1-y-zCoyMzO2（0.98＆nlE; x＆lt; ll; 1.04,0.25＆amp; nlE; y＆nlE; 0.40,0和nlE; z＆nlE; 0.07和M表示的六方晶锂镍复合氧化物） 是选自Al，Ti，Mn，Ga，Mg和Nb中的至少一种元素），其中通过从X射线衍射图中的Rietveld分析获得的锂主层中的锂占有率至少为98.7％，并且 从X射线衍射中的（003）面的峰计算出的微晶直径为50〜300nm。

公开(公告)号：US11316155B2

公开(公告)日：2022-04-26

申请号：US16473339

申请日：2017-12-25

Applicant: SUMITOMO METAL MINING CO., LTD.

Inventor： Kenji Tashiro ,  Masanori Takagi

IPC: H01M4/485 ,  H01M4/505 ,  H01M10/0525

Abstract: There is provided a cathode active material precursor for a non-aqueous electrolyte secondary battery that is a complex metal hydroxide with a flow factor of 10 or greater to 20 or smaller.

公开(公告)号：US09991505B2

公开(公告)日：2018-06-05

申请号：US14379924

申请日：2013-02-14

Applicant: Sumitomo Metal Mining Co., Ltd.

Inventor： Rei Kokado ,  Kensaku Mori ,  Masanori Takagi ,  Tetsutaro Hayashi

IPC: H01M4/1391 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/485 ,  B29B7/00 ,  B29C43/00 ,  B29C43/02 ,  H01M4/04 ,  H01M4/36 ,  C01G53/00 ,  H01M4/525 ,  H01M4/02 ,  H01M4/131 ,  H01M10/052 ,  B29K105/16 ,  B29K509/00 ,  B29L31/34

CPC classification number: H01M4/1391 ,  B29B7/005 ,  B29C43/003 ,  B29C43/02 ,  B29K2105/16 ,  B29K2509/00 ,  B29K2995/0005 ,  B29L2031/3468 ,  C01G53/42 ,  C01G53/50 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2006/12 ,  C01P2006/40 ,  H01M4/043 ,  H01M4/131 ,  H01M4/364 ,  H01M4/485 ,  H01M4/525 ,  H01M4/622 ,  H01M4/624 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/028 ,  H01M2220/20

Abstract: Provided is a positive-electrode material for nonaqueous-electrolyte secondary batteries, the positive-electrode material being capable of achieving both high capacity and high output when used for a positive electrode for nonaqueous-electrolyte secondary batteries. Also, provided is a method for manufacturing the positive-electrode material for nonaqueous-electrolyte secondary batteries, wherein a lithium metal composite oxide powder is mixed with lithium tungstate, the lithium metal composite oxide powder being represented by a general formula LizNi1-x-yCoxMyO2 (wherein 0.10≤x≤0.35, 0≤y≤0.35, 0.97≤z≤1.20, and M is an addition element and at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al) and comprising primary particles and secondary particles composed of aggregation of the primary particles.