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公开(公告)号：US09391318B2
公开(公告)日：2016-07-12
申请号：US13941253
申请日：2013-07-12
发明人： Hiroki Nagai , Masahiro Morita , Kensaku Mori , Shin Imaizumi , Kenji Ikeuchi , Toshiyuki Osako , Hiroyuki Toya
CPC分类号： H01M4/366 , C01G53/006 , C01G53/50 , C01P2002/52 , C01P2004/03 , C01P2004/61 , C01P2006/11 , C01P2006/12 , C01P2006/16 , H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , Y02E60/122 , Y02P70/54 , Y02T10/7011
摘要： Active material particles are provided that exhibit performance suitable for increasing the output of a lithium secondary battery and little deterioration due to charge-discharge cycling. The active material particles provided by the present invention have a hollow structure having secondary particles including an aggregate of a plurality of primary particles of a lithium transition metal oxide, and a hollow portion formed inside the secondary particles, and through holes that penetrates to the hollow portion from the outside are formed in the secondary particles. BET specific surface area of the active material particles is 0.5 to 1.9 m2/g.
摘要翻译： 提供活性物质颗粒，其表现出适合于增加锂二次电池的输出并且由于充放电循环而导致的劣化。 由本发明提供的活性物质颗粒具有中空结构，其具有二次粒子，其具有多个锂过渡金属氧化物的一次粒子的聚集体和形成在二次粒子内部的中空部分，以及穿透到中空部的通孔 从二次颗粒形成从外部的部分。 活性物质粒子的BET比表面积为0.5〜1.9m 2 / g。
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公开(公告)号：US12113213B2
公开(公告)日：2024-10-08
申请号：US14907087
申请日：2014-07-22
IPC分类号： H01M4/525 , C01G53/00 , H01M4/02 , H01M4/36 , H01M4/505 , H01M10/052 , H01M10/0525
CPC分类号： H01M4/505 , C01G53/50 , H01M4/366 , H01M4/525 , H01M10/052 , H01M10/0525 , C01P2002/50 , C01P2002/74 , C01P2004/61 , C01P2006/12 , C01P2006/40 , H01M2004/028 , Y02T10/70
摘要： A cathode active material for a non-aqueous electrolyte secondary battery has improved output characteristics in low-temperature environment use. A lithium mixture includes composite hydroxide particles and a lithium compound calcined in an oxidizing atmosphere under a temperature rising time from 650° C. to a calcination temperature set to 0.5-1.5 hours and the calcination temperature set to 850° C.-1000° C. and maintained for 1.0-5.0 hours. The material has the general formula (A): Li1+SNixCoyMnzM1O2 , where −0.05≤s≤0.20, x+y+z+t=1, 0.3≤x≤0.7, 0.1≤y≤0.4, 0.1≤z≤0.4, 0≤t≤0.05, and M is selected from Ca, Mg, Al, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, and W. The material includes hexagonal lithium composite oxide particles. The ratio of the crystallite size at plane (104) to plane (003) is greater than 0 and less than 0.60.
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公开(公告)号：US10516165B2
公开(公告)日：2019-12-24
申请号：US15918956
申请日：2018-03-12
发明人： Hiroyuki Toya , Shin Imaizumi , Kensaku Mori , Atsushi Fukui , Kenji Ikeuchi , Kazuomi Ryoshi , Toshiyuki Osako , Hiroki Nagai
IPC分类号： H01M4/505 , C01G53/00 , H01M4/131 , H01M4/525 , H01M10/052
摘要： An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.
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公开(公告)号：US11056681B2
公开(公告)日：2021-07-06
申请号：US17007707
申请日：2020-08-31
发明人： Yuki Furuichi , Tetsufumi Komukai , Hiroyuki Toya
IPC分类号： H01B1/08 , H01M4/04 , H01M4/131 , H01M4/505 , H01M4/525 , H01M4/62 , C01G53/00 , H01M4/36 , C01G53/04 , H01M10/0525
摘要： Provided is a method for producing the positive electrode active material for nonaqueous electrolyte secondary batteries, including a first step of mixing a Li-metal composite oxide powder which is represented by the general formula: LizNi1-x-yCoxMyO2 (where 0≤x≤0.35, 0≤y≤0.35, and 0.97≤z≤1.30 are satisfied, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al) and constituted by primary particles and secondary particles, to an alkaline solution with a W compound dissolved therein, and immersing a resulting mixture, followed by solid-liquid separation, to obtain a W mixture with W uniformly dispersed on the surface of the primary particles of the composite oxide, and a second step of heat-treating the W mixture to thereby form a compound containing W and Li on the surface of the primary particles of the composite oxide powder.
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公开(公告)号：US20180123118A1
公开(公告)日：2018-05-03
申请号：US15568567
申请日：2016-04-15
发明人： Yuki Furuichi , Tetsufumi Komukai , Hiroyuki Toya
IPC分类号： H01M4/131 , C01G53/04 , H01M10/0525 , H01M4/525 , H01M4/505
摘要： Provided is a method for producing the positive electrode active material for nonaqueous electrolyte secondary batteries, including a first step of mixing a Li-metal composite oxide powder which is represented by the general formula: LizNi1-x-yCoxMyO2 (where 0≤x≤0.35, 0≤y≤0.35, and 0.97≤z≤1.30 are satisfied, and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti and Al) and constituted by primary particles and secondary particles, to an alkaline solution with a W compound dissolved therein, and immersing a resulting mixture, followed by solid-liquid separation, to obtain a W mixture with W uniformly dispersed on the surface of the primary particles of the composite oxide, and a second step of heat-treating the W mixture to thereby form a compound containing W and Li on the surface of the primary particles of the composite oxide powder.
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公开(公告)号：US09941515B2
公开(公告)日：2018-04-10
申请号：US14898924
申请日：2014-06-13
发明人： Yasutaka Kamata , Hiroyuki Toya
CPC分类号： H01M4/525 , C01G53/006 , C01G53/50 , C01P2002/50 , C01P2002/52 , C01P2002/74 , C01P2004/03 , C01P2004/84 , C01P2006/12 , C01P2006/14 , C01P2006/40 , H01M4/505 , H01M10/0525 , H01M2004/028 , H01M2220/20
摘要： Achieved is a nickel-cobalt-manganese composite hydroxide which is excellent in reactivity with a lithium compound, and excellent thermal stability and battery characteristics. The nickel-cobalt-manganese composite hydroxide is represented by a general formula: Ni1-x-y-zCoxMnyMz (OH)2 (0
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公开(公告)号：US20230369580A1
公开(公告)日：2023-11-16
申请号：US18220905
申请日：2023-07-12
发明人： Taira Aida , Hiroyuki Toya
IPC分类号： H01M4/505 , H01M4/525 , C01G53/00 , H01M10/0525
CPC分类号： H01M4/505 , H01M4/525 , C01G53/50 , H01M10/0525 , H01M2004/028
摘要： Provided is a precursor of a positive electrode active material containing, in a reduced amount, impurities which do not contribute to a charge/discharge reaction but rather corrode a firing furnace and peripheral equipment and thus having excellent battery characteristics and safety, and production method thereof.
A method for producing a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries having a hollow structure or porous structure includes obtaining the precursor by washing nickel-manganese composite hydroxide particles having a particular composition ratio and a pore structure in which pores are present within the particles with an aqueous carbonate solution having a carbonate concentration of 0.1 mol/L or more.-
公开(公告)号：US10601036B2
公开(公告)日：2020-03-24
申请号：US15129159
申请日：2015-03-12
发明人： Taira Aida , Hiroyuki Toya
IPC分类号： H01M4/1391 , H01M4/505 , H01M4/525 , C01G53/00 , H01M10/0525 , H01M4/02
摘要： Provided is a precursor of a positive electrode active material containing, in a reduced amount, impurities which do not contribute to a charge/discharge reaction but rather corrode a firing furnace and peripheral equipment and thus having excellent battery characteristics and safety, and production method thereof. A method for producing a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries having a hollow structure or porous structure includes obtaining the precursor by washing nickel-manganese composite hydroxide particles having a particular composition ratio and a pore structure in which pores are present within the particles with an aqueous carbonate solution having a carbonate concentration of 0.1 mol/L or more.
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公开(公告)号：US20190341610A1
公开(公告)日：2019-11-07
申请号：US16509941
申请日：2019-07-12
发明人： Taira Aida , Hiroyuki Toya
IPC分类号： H01M4/505 , C01G53/00 , H01M10/0525 , H01M4/525
摘要： Provided is a precursor of a positive electrode active material containing, in a reduced amount, impurities which do not contribute to a charge/discharge reaction but rather corrode a firing furnace and peripheral equipment and thus having excellent battery characteristics and safety, and production method thereof.A method for producing a precursor of a positive electrode active material for nonaqueous electrolyte secondary batteries having a hollow structure or porous structure includes obtaining the precursor by washing nickel-manganese composite hydroxide particles having a particular composition ratio and a pore structure in which pores are present within the particles with an aqueous carbonate solution having a carbonate concentration of 0.1 mol/L or more.
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公开(公告)号：US10396356B2
公开(公告)日：2019-08-27
申请号：US15656567
申请日：2017-07-21
发明人： Hiroyuki Toya , Kazuomi Ryoshi , Toshiyuki Osako
IPC分类号： H01M4/131 , H01M4/485 , C01G53/00 , H01M10/052 , H01M4/36 , H01M4/48 , H01M4/505 , H01M4/525 , H01M4/1391 , H01M10/04 , H01M4/02
摘要： Provided are nickel manganese composite hydroxide particles that are a precursor for forming cathode active material comprising lithium nickel manganese composite oxide having hollow structure of particles having a small and uniform particle size for obtaining a non-aqueous electrolyte secondary battery having high capacity, high output and good cyclability. When obtaining the nickel manganese composite hydroxide particles from a crystallization reaction, an aqueous solution for nucleation, which includes at least a metallic compound that contains nickel and a metallic compound that contains manganese, and does not include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60° C. or greater, and so that the pH value that is measured at a standard solution temperature of 25° C. is 11.5 to 13.5, and after nucleation is performed, an aqueous solution for particle growth, which includes the nuclei that were formed in the nucleation step and does not substantially include a complex ion formation agent that forms complex ions with nickel, manganese and cobalt, is controlled so that the temperature of the solution is 60° C. or greater, and so that the pH value that is measured at a standard solution temperature of 25° C. is 9.5 to 11.5, and is less than the pH value in the nucleation step.
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