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公开(公告)号：US11018339B2
公开(公告)日：2021-05-25
申请号：US16148335
申请日：2018-10-01
Applicant: BASF TODA BATTERY MATERIALS LLC
Inventor： Akihisa Kajiyama , Kazumichi Koga , Tsuyoshi Wakiyama , Ryuta Masaki , Takayuki Yamamura , Kazutoshi Matsumoto
IPC: H01M4/525 , C01G53/00 , H01M4/131 , H01M4/1391 , H01M4/505 , H01M10/0525 , H01M4/02
Abstract: A positive electrode active material comprises a Li-transition metal-layered oxide represented by the formula: Lia(NibCocAldMee)O2 (in which Me=Mn, Mg, Ti, Ru, Zr, Nb, Mo, W; 1.00≤a≤1.15; 0.25
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公开(公告)号：US20190115596A1
公开(公告)日：2019-04-18
申请号：US16148335
申请日：2018-10-01
Applicant: BASF TODA BATTERY MATERIALS LLC
Inventor： Akihisa KAJIYAMA , Kazumichi KOGA , Tsuyoshi WAKIYAMA , Ryuta MASAKI , Takayuki YAMAMURA , Kazutoshi MATSUMOTO
IPC: H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525
Abstract: A positive electrode active material comprises a Li-transition metal-layered oxide represented by the formula: Lia(NibCocAldMee)O2 (in which Me=Mn, Mg, Ti, Ru, Zr, Nb, Mo, W; 1.00≤a≤1.15; 0.25
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公开(公告)号：US12183916B2
公开(公告)日：2024-12-31
申请号：US17464463
申请日：2021-09-01
Inventor： Taisei Inoue , Daisuke Nishikawa , Manabu Yamamoto , Katsuya Inoue
Abstract: When a non-aqueous electrolyte secondary battery in which a positive electrode active material comprising a layered lithium-composite oxide is used for a positive electrode is subjected to charge/discharge under a prescribed condition, in a graph showing the relationship between voltage “V” with discharge during 5th cycle and value dQ/dV from differentiation of battery capacity “Q” with discharge during 5th cycle by voltage “V”, peak intensity ratio “r” represented by the equation: r=|Ic|/(|Ia|+|Ib|+|Ic|) satisfies 0
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公开(公告)号：US12051804B2
公开(公告)日：2024-07-30
申请号：US17020136
申请日：2020-09-14
Applicant: BASF TODA BATTERY MATERIALS LLC
Inventor： Junji Kashiwagi , Daisuke Nishikawa , Satoshi Nakamura , Kazutoshi Ishizaki , Kazumichi Koga , Hiroyoshi Noguchi , Takahiko Sugihara , Kazutoshi Matsumoto
CPC classification number: H01M4/525 , H01M4/0471 , H01M4/505 , H01M10/0427 , H01M10/0525 , H01M2004/028
Abstract: Excellent thermal stability in addition to excellent cycle property with maintaining a sufficient battery capacity is shown by positive electrode active material particles having a layered rock salt structure, represented by the compositional formula: (LiγXe)(NiaCobXcZd)O2, in the compositional formula: X is a divalent metallic element capable of substituting for Li-site; Z is a metallic element containing at least Al and/or Mn, other than X; 0.93≤γ≤1.15; 0.82≤a
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公开(公告)号：US20220140333A1
公开(公告)日：2022-05-05
申请号：US17429868
申请日：2019-09-27
Inventor： Taisei INOUE , Daisuke NISHIKAWA , Katsuya INOUE
Abstract: Provided is a “lithium-excess-type” active material having high initial efficiency. Disclosed is a positive active material for a nonaqueous electrolyte secondary battery containing a lithium transition metal composite oxide. In this positive active material, the lithium transition metal composite oxide has an α-NaFeO2 structure, a molar ratio Li/Me of Li to a transition metal (Me) is 1
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Patent Agency Ranking
公开(公告)号：US20200055739A1
公开(公告)日：2020-02-20
申请号：US16346319
申请日：2017-10-31
Applicant: BASF TODA BATTERY MATERIALS LLC , TANABE CORPORATION
Inventor： Manabu YAMAMOTO , Osamu SASAKI , Noriyasu KIMURA , Kenichi NISHIMURA , Wataru KOYANAGI , Toru KUWAHARA
Abstract: The object of the present invention is to improve production efficiency of lithium hydroxide anhydride in a method for producing lithium hydroxide anhydride from lithium hydroxide hydrate by using a rotary kiln. The method for producing lithium hydroxide anhydride comprises steps of: supplying the lithium hydroxide hydrate to a region between a heating part which is the part of the furnace core tube surrounded by the heating furnace and one end of the furnace core tube; delivering the supplied lithium hydroxide hydrate toward the other end of the furnace core tube; feeding a drying gas with a temperature of 100° C. or higher to the region between the one end and the heating part of the furnace core tube, when the lithium hydroxide hydrate is supplied; and heating and dehydrating the lithium hydroxide hydrate by the heating furnace which is set to 230-450° C. during the lithium hydroxide delivering step, to form lithium hydroxide anhydride.
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7.发明申请公开(公告)号：US20190221839A1
公开(公告)日：2019-07-18
申请号：US16361006
申请日：2019-03-21
Inventor： Taisei Inoue , Daisuke Nishikawa , Manabu Yamamoto , Katsuya Inoue
IPC: H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525
CPC classification number: H01M4/366 , C01G53/00 , H01M4/36 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2004/021 , H01M2004/028
Abstract: When a non-aqueous electrolyte secondary battery in which a positive electrode active material comprising a layered lithium-composite oxide is used for a positive electrode is subjected to charge/discharge under a prescribed condition, in a graph showing the relationship between voltage “V” with discharge during 5th cycle and value dQ/dV from differentiation of battery capacity “Q” with discharge during 5th cycle by voltage “V”, peak intensity ratio “r” represented by the equation: r=|Ic|/(|Ia|+|Ib|+|Ic|) satisfies 0
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公开(公告)号：US20250140828A1
公开(公告)日：2025-05-01
申请号：US18834753
申请日：2023-01-16
Applicant: BASF TODA BATTERY MATERIALS LLC
Inventor： Junji KASHIWAGI , Kazumichi KOGA , Daisuke MORITA
Abstract: This invention provides a method for treating positive electrode active material particles comprising steps of a lithium-nickel composite is introduced into water and stirred to prepare a slurry; an aluminum-containing solution is dripped onto the slurry while the slurry is stirred; the slurry on which the aluminum-containing solution has been dripped is filtered to obtain a cake-like compound; and the cake-like compound is dried by performing a heat treatment, and a Li—Al hydroxide coating layer is formed on surfaces of secondary particles of the lithium-nickel composite, and at least part of grain boundary portions formed by adjacent primary particles located on the outermost surface, among a plurality of primary particles constituting the secondary particles, and thus possible to restrict any more cracking of particles than necessary and to control the amount of residual lithium, and a deterioration in battery characteristics can be restricted, even with repeated use over long time.
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公开(公告)号：US20230178729A1
公开(公告)日：2023-06-08
申请号：US18165252
申请日：2023-02-06
Applicant: BASF TODA BATTERY MATERIALS LLC
Inventor： Satoshi TANIMOTO , Hiroyoshi NOGUCHI , Zhen QUAN , Noriyasu KIMURA , Tsuyoshi WAKIYAMA , Kazumichi KOGA , Yoko TOMOTA
CPC classification number: H01M4/525 , H01M4/0471 , H01M2004/028
Abstract: A positive electrode active material of the present invention comprising a composite oxide containing Li and Ni, and optionally containing at least one element other than Li and Ni, is characterized in one of the following: primary particles constituting each of secondary particles of the composite oxide and having a variation coefficient of span of 17% or less, the span being a formula: (D190−D110)/D150 (D110, D150, D190: particle diameter corresponding to 10%, 50%, 90% of an integrated value in a number standard-particle diameter distribution of primary particle size); the primary particles having a variation coefficient of D150 of 19% or less; and the secondary particles having each of values of 1.00% or less, the values being formulae: |[ER1−ER21)/ER1]|×100, |[ER1−ER22)/ER1]|×100, |[ER1−ER23)/ER1]|×100 (ER1, ER21, ER22, ER23: element ratio (Li/(Ni+Other element(s))) of entire secondary particles, small particles, middle particles, large particles).
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公开(公告)号：US11121365B2
公开(公告)日：2021-09-14
申请号：US16361006
申请日：2019-03-21
Inventor： Taisei Inoue , Daisuke Nishikawa , Manabu Yamamoto , Katsuya Inoue
Abstract: When a non-aqueous electrolyte secondary battery in which a positive electrode active material comprising a layered lithium-composite oxide is used for a positive electrode is subjected to charge/discharge under a prescribed condition, in a graph showing the relationship between voltage “V” with discharge during 5th cycle and value dQ/dV from differentiation of battery capacity “Q” with discharge during 5th cycle by voltage “V”, peak intensity ratio “r” represented by the equation: r=|Ic|/(|Ia|+|Ib|+|Ic|) satisfies 0
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