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公开(公告)号：US20240266526A1
公开(公告)日：2024-08-08
申请号：US18612166
申请日：2024-03-21
发明人： Hiroko Oshita , Kazuomi Ryoshi , Taira Aida , Koji Yamaji , Jiro Okada
CPC分类号： H01M4/505 , H01M4/0471 , H01M4/362 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： The present invention provides a composite oxide that can achieve a high low-temperature output characteristic, a method for manufacturing the same, and a positive electrode active material in which the generation of soluble lithium is suppressed and a problem of gelation is not caused during the paste preparation. A positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle, wherein the secondary particle has a hollow structure inside as a main inside structure, the slurry pH is 11.5 or less, the soluble lithium content rate is 0.5 [% by mass] or less, the specific surface area is 2.0 to 3.0 [m2/g], and the porosity is 20 to 50 [%].
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公开(公告)号：US11996556B2
公开(公告)日：2024-05-28
申请号：US16641810
申请日：2018-08-23
IPC分类号： H01M4/525 , H01M4/02 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/36 , H01M4/505 , H01M10/0525
CPC分类号： H01M4/525 , H01M4/0471 , H01M4/131 , H01M4/1391 , H01M4/364 , H01M4/366 , H01M4/505 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： An object is to provide a positive electrode active material for a non-aqueous electrolyte secondary battery that can suppress gelation of a positive electrode mixture paste and can improve stability when a non-aqueous electrolyte secondary battery is manufactured. A positive electrode active material for a non-aqueous electrolyte secondary battery has a hexagonal layered crystal structure, is represented by general formula (1): Li1+sNixCoyMnzMwBtO2+α, and includes a lithium-metal composite oxide containing a secondary particle with a plurality of aggregated primary particles and a lithium-boron compound present on at least a part of surfaces of the primary particles. The amount of lithium hydroxide that elutes when the positive electrode active material is dispersed in water, measured by a neutralization titration method, is 0.01% by mass or more and 0.5% by mass or less with respect to the entire positive electrode active material.
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公开(公告)号：US11289688B2
公开(公告)日：2022-03-29
申请号：US16952597
申请日：2020-11-19
发明人： Hiroko Oshita , Kazuomi Ryoshi
IPC分类号： H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/525 , H01M10/0525 , H01M10/0568 , H01M4/02
摘要： A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries is disclosed which includes cleaning a powder formed of a lithium-nickel composite oxide represented by a general formula LizNi1-x-yCoxMyO2 where 0≤x≤0.35; 0≤y≤0.10; 0.95≤z≤1.10; and M is at least one element selected from Mn, V, Mg, Mo, Nb, Ti, and Al with an aqueous lithium carbonate solution and drying the cleaned powder.
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公开(公告)号：US20200350565A1
公开(公告)日：2020-11-05
申请号：US16760130
申请日：2018-07-31
发明人： Hiroko Oshita , Kazuomi Ryoshi , Taira Aida , Koji Yamaji , Jiro Okada
IPC分类号： H01M4/36 , H01M4/525 , H01M4/505 , H01M4/133 , H01M4/1393 , H01M4/04 , H01M10/0525
摘要： The present invention provides a composite oxide that can achieve a high low-temperature output characteristic, a method for manufacturing the same, and a positive electrode active material in which the generation of soluble lithium is suppressed and a problem of gelation is not caused during the paste preparation. A positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle, wherein the secondary particle has a hollow structure inside as a main inside structure, the slurry pH is 11.5 or less, the soluble lithium content rate is 0.5 [96 by mass] or less, the specific surface area is 2.0 to 3.0 [m2/g], and the porosity is 20 to 50 [96].
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公开(公告)号：US20200343547A1
公开(公告)日：2020-10-29
申请号：US16642912
申请日：2018-07-31
发明人： Jun Yokoyama , Kazuomi Ryoshi
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/36 , H01M4/62 , C01G53/00
摘要： Provided is a positive electrode active material for non-aqueous electrolyte secondary batteries for making high capacity and high output compatible, non-aqueous electrolyte secondary batteries, having the positive electrode active material adopted thereto, and a production method for a positive electrode active material in which the positive electrode active material can be easily produced in an industrial scale. A positive electrode active material for non-aqueous electrolyte secondary batteries, contains: primary particles of a lithium nickel composite oxide represented by at least General Formula: LizNi1-x-yCoxMyO2 (0.95≤z≤1.03, 0
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公开(公告)号：US10294120B2
公开(公告)日：2019-05-21
申请号：US15523568
申请日：2015-10-20
发明人： Hiroko Oshita , Kazuomi Ryoshi , Masanori Takagi
IPC分类号： C01G53/04 , H01M4/525 , H01M4/131 , H01M10/0525 , C01G53/00
摘要： A nickel composite hydroxide containing reduced amounts of sulfate radicals and chlorine as impurities. The nickel composite hydroxide is represented by Ni1-x-yCoxAly(OH)2+α(0.05≤x≤0.01≤y≤0.2, x+y
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公开(公告)号：US10141571B2
公开(公告)日：2018-11-27
申请号：US14431995
申请日：2013-09-27
发明人： Katsuya Kase , Yasutaka Kamata , Kazuomi Ryoshi
摘要： To improve cycling characteristics of a non-aqueous electrolyte secondary battery by obtaining a nickel-cobalt composite hydroxide having a sharp particle size distribution as a precursor, a slurry including a nickel-cobalt composite hydroxide obtained by continuously supplying an aqueous solution that includes at least nickel and cobalt, an ammonium ion donor aqueous solution and a caustic alkali aqueous solution to a reaction vessel and reacting, is continuously extracted and separated into a large particle size portion and s small particle size portion by classification, and the small particle size portion is continuously returned to the reaction vessel. As a result, a nickel-cobalt composite hydroxide is obtained that is expressed by the general formula: Ni1-x-yCoxMy(OH)2 (where, 0.05≤x≤0.50, 0≤y≤0.10, 0.05≤x+y≤0.50, and M is at least one kind of metal element selected from among Al, Mg, Mn, Ti, Fe, Cu, Zn and Ga, and that satisfies the relationships (D50−D10)/D50≤0.30, and (D90−D50)/D50≤0.30 among D10, D50 and D90 of this composite hydroxide.
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公开(公告)号：US09685656B2
公开(公告)日：2017-06-20
申请号：US15389387
申请日：2016-12-22
发明人： Mitsuru Yamauchi , Kazuomi Ryoshi , Kensaku Mori
IPC分类号： H01M4/525 , C01G53/00 , H01M4/131 , H01M10/0525
CPC分类号： H01M4/131 , C01G53/00 , C01G53/006 , C01G53/40 , C01G53/42 , C01G53/50 , C01P2002/50 , C01P2004/03 , C01P2004/61 , C01P2006/11 , C01P2006/40 , H01M4/0497 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2220/30 , Y02E60/122 , Y02P70/54
摘要： Provided is a cathode active material for a non-aqueous electrolyte secondary battery that has a uniform particle size and high packing density, and that is capable of increased battery capacity and improved coulomb efficiency.When producing a nickel composite hydroxide that is a precursor to the cathode active material by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.6, after which, while keeping the amount of slurry constant and continuously removing only the liquid component, the crystallization reaction is continued until the average particle size per volume of secondary particles of the nickel composite hydroxide becomes 8.0 μm to 50.0 μm.
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9.发明授权公开(公告)号：US09583764B2
公开(公告)日：2017-02-28
申请号：US15135804
申请日：2016-04-22
发明人： Mitsuru Yamauchi , Kazuomi Ryoshi , Kensaku Mori
IPC分类号： H01M4/505 , H01M4/525 , H01M4/04 , H01M10/052 , H01M10/0525 , C01G53/00
CPC分类号： H01M4/131 , C01G53/00 , C01G53/006 , C01G53/40 , C01G53/42 , C01G53/50 , C01P2002/50 , C01P2004/03 , C01P2004/61 , C01P2006/11 , C01P2006/40 , H01M4/0497 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0525 , H01M2220/30 , Y02E60/122 , Y02P70/54
摘要： When producing a nickel composite hydroxide that is a precursor to the cathode active material for a non-aqueous electrolyte secondary battery by supplying an aqueous solution that includes at least a nickel salt, a neutralizing agent and a complexing agent into a reaction vessel while stirring and performing a crystallization reaction, a nickel composite hydroxide slurry is obtained while controlling the ratio of the average particle size per volume of secondary particles of nickel composite hydroxide that is generated inside the reaction vessel with respect to the average particle size per volume of secondary particles of nickel composite hydroxide that is finally obtained so as to be 0.2 to 0.6, after which, while keeping the amount of slurry constant and continuously removing only the liquid component, the crystallization reaction is continued until the average particle size per volume of secondary particles of the nickel composite hydroxide becomes 8.0 μm to 50.0 μm.
摘要翻译： 当通过在搅拌下将至少包含镍盐，中和剂和络合剂的水溶液供应到反应容器中来制备作为非水电解质二次电池用正极活性物质的前体的镍复合氢氧化物时， 进行结晶反应时，得到镍复合氢氧化物浆料，同时控制反应容器内部产生的镍复合氢氧化物的二次粒子的平均粒径与二次粒子的体积平均粒径的比例 镍复合氢氧化物，其最终得到为0.2〜0.6，然后在保持浆料量恒定并连续除去液体成分的同时，继续结晶反应直至平均粒径为 镍复合氢氧化物为8.0〜50.0μm。
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公开(公告)号：US11967709B2
公开(公告)日：2024-04-23
申请号：US16760130
申请日：2018-07-31
发明人： Hiroko Oshita , Kazuomi Ryoshi , Taira Aida , Koji Yamaji , Jiro Okada
CPC分类号： H01M4/505 , H01M4/0471 , H01M4/362 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
摘要： The present invention provides a composite oxide that can achieve a high low-temperature output characteristic, a method for manufacturing the same, and a positive electrode active material in which the generation of soluble lithium is suppressed and a problem of gelation is not caused during the paste preparation. A positive electrode active material for non-aqueous electrolyte secondary batteries, including a lithium-metal composite oxide powder including a secondary particle configured by aggregating primary particles containing lithium, nickel, manganese, and cobalt, or a lithium-metal composite oxide powder including both the primary particles and the secondary particle, wherein the secondary particle has a hollow structure inside as a main inside structure, the slurry pH is 11.5 or less, the soluble lithium content rate is 0.5 [% by mass] or less, the specific surface area is 2.0 to 3.0 [m2/g], and the porosity is 20 to 50 [%].
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