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1.发明申请公开(公告)号：US20190221838A1
公开(公告)日：2019-07-18
申请号：US16214208
申请日：2018-12-10
Inventor： Takayuki Ishikawa , Ryuichi Natsui , Issei Ikeuchi , Kensuke Nakura
CPC classification number: H01M4/366 , H01M4/483 , H01M4/505 , H01M4/525 , H01M2004/028 , H01M2300/0034 , H01M2300/004 , H01M2300/0065
Abstract: A positive electrode active material includes a lithium composite oxide and a covering material that covers a surface of the lithium composite oxide. The covering material has an electron conductivity of 106 S/m or less. The lithium composite oxide is a multiphase mixture including a first phase having a first crystal structure that belongs to a space group Fm-3m and a second phase having a second crystal structure that belongs to a space group other than a space group Fm-3m. The ratio I(18°-20°)/I(43°-46°) of a first integrated intensity I(18°-20°) of a first maximum peak present at a first diffraction angle 2θ of 18° or more and 20° or less to a second integrated intensity I(43°-46°) of a second maximum peak present at a second diffraction angle 2θ of 43° or more and 46° or less in an XRD pattern of the lithium composite oxide satisfies 0.05≤I(18°-20°)/I(43°-46°)≤0.90.
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公开(公告)号：US20230378451A1
公开(公告)日：2023-11-23
申请号：US18029213
申请日：2021-09-14
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
CPC classification number: H01M4/505 , C01G45/1214 , H01M2004/028
Abstract: A positive electrode active material for a secondary battery includes a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m, wherein the lithium metal composite oxide includes Cu and a transition metal element M1 other than Li and Cu. The lithium metal composite oxide is preferably represented by a composition formula LiaMnbCucA2dO2-eFe (where A2 is at least one element excluding Li, Mn, Cu, O, and F, and 0
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公开(公告)号：US20230045802A1
公开(公告)日：2023-02-16
申请号：US17792962
申请日：2021-01-26
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/505 , H01M4/485 , H01M50/46 , H01M10/0525
Abstract: This positive electrode active substance for a non-aqueous electrolyte secondary battery contains a lithium-transition metal composite oxide which has a crystal structure belonging to the space group Fm-3m and is represented by the compositional formula LixMnyMaObFc (in the formula: M is at least one type of metal element excluding Mn; x+y+a=b+c=2; 1
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4.发明授权公开(公告)号：US10586981B2
公开(公告)日：2020-03-10
申请号：US15647265
申请日：2017-07-12
Inventor： Issei Ikeuchi , Ryuichi Natsui , Kensuke Nakura
IPC: H01M4/485 , H01M4/58 , H01M4/525 , H01M4/38 , C01G45/12 , H01M4/505 , H01M10/0525 , H01M10/052 , H01M4/02
Abstract: A positive electrode active material for a battery, the positive electrode active material comprising a compound having a crystal structure of space group Fm-3m and represented by composition formula (1): LixMe1αMe2βO2 . . . (1). In the formula, Me1 represents one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, Me2 represents one or more elements selected from the group consisting of B, Si, and P, and the following conditions are met: 0
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公开(公告)号：US20250062334A1
公开(公告)日：2025-02-20
申请号：US18721348
申请日：2022-12-22
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/02 , H01M10/052
Abstract: A positive electrode active material for a secondary battery contains a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to the space group Fm-3m. The lithium metal composite oxide contains at least one element A1 selected from the group consisting of Fe, Cr, Na, Mg, Cu, Zn, Pb, Sb, and W. The content of the element A1 in the lithium metal composite oxide is 10 ppm by mass or more and 1000 ppm by mass or less with respect to the total amount of the lithium metal composite oxide.
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Patent Agency Ranking
公开(公告)号：US20230044513A1
公开(公告)日：2023-02-09
申请号：US17786855
申请日：2020-10-13
Inventor： Issei Ikeuchi , Mitsuhiro Hibino
Abstract: This positive electrode active material for a non-aqueous electrolyte secondary battery contains a lithium-transition metal composite compound. The lithium-transition metal composite compound is represented by general formula LixMnyNizMeαOaFb (in the formula, 1≤x≤1.2, 0.4≤y≤0.8; 0≤z≤0.4, x+y+z=2, 0
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公开(公告)号：US11171327B2
公开(公告)日：2021-11-09
申请号：US16212992
申请日：2018-12-07
Inventor： Takayuki Ishikawa , Ryuichi Natsui , Issei Ikeuchi , Kensuke Nakura
Abstract: A positive electrode active material includes a lithium composite oxide containing: at least one element selected from the group consisting of fluorine, chlorine, nitrogen, sulfur, bromine, and iodine; and a covering material that covers a surface of the lithium composite oxide. The lithium composite oxide has a crystal structure that belongs to a space group R-3 m. The ratio I(003)/I(104) of a first integrated intensity I(003) of a first peak corresponding to a (003) plane to a second integrated intensity I(104) of a second peak corresponding to a (104) plane in an XRD pattern of the lithium composite oxide satisfies 0.62≤I(003)/I(104) ≤0.90. The covering material has an electron conductivity of 106S/m or less.
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公开(公告)号：US10854876B2
公开(公告)日：2020-12-01
申请号：US16278701
申请日：2019-02-18
Inventor： Issei Ikeuchi , Ryuichi Natsui , Kensuke Nakura
IPC: H01M4/505 , H01M10/0525 , C01B11/24 , C01B21/084 , C01G45/00 , H01M4/525 , H01M4/58 , H01M4/485 , H01M10/0565 , H01M4/131 , H01M4/1315 , C01G51/00 , C01G53/00 , H01M10/0562 , H01M4/02
Abstract: A positive-electrode active material contains a compound represented by the following composition formula (1): LixMeyOαXβ (1) where Me denotes one or more elements selected from the group consisting of Mn, Ni, Co, Fe, Al, Sn, Cu, Nb, Mo, Bi, Ti, V, Cr, Y, Zr, Zn, Na, K, Ca, Mg, Pt, Au, Ag, Ru, Ta, W, La, Ce, Pr, Sm, Eu, Dy, and Er, X denotes two or more elements selected from the group consisting of F, Cl, Br, I, N, and S, and x, y, α, and β satisfy 0.75≤x≤2.25, 0.75≤y≤1.50, 1≤α
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公开(公告)号：US20250062333A1
公开(公告)日：2025-02-20
申请号：US18720834
申请日：2022-12-22
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , C01G45/12 , H01M10/0525
Abstract: A positive electrode active material for a secondary battery contains a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to the space group Fm-3m. The lithium metal composite oxide contains at least one element A1 selected from the group consisting of Fe, Ca, Cr, Na, Al, Si, Mg, Cu, Zn, Pb, Sb, and W. The content of the element A1 in the lithium metal composite oxide is 10 ppm by mass or more and 1000 ppm by mass or less with respect to the total amount of the lithium metal composite oxide. A lattice constant a, which indicates a length in an a-axis direction of a crystal lattice of the lithium metal composite oxide is 4.09 Å or more and 4.16 Å or less.
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公开(公告)号：US20230369579A1
公开(公告)日：2023-11-16
申请号：US18028999
申请日：2021-09-14
Inventor： Jin Zhang , Issei Ikeuchi , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/1315 , C01B11/24
CPC classification number: H01M4/505 , C01B11/24 , H01M4/1315 , C01P2006/40
Abstract: A positive electrode active material for a secondary battery including: a lithium metal composite oxide having a crystal structure based on a rock salt structure belonging to a space group Fm-3m. The lithium metal composite oxide contains an element A1 of at least one selected from the group consisting of Ca, Al, and Si, and in the lithium metal composite oxide, a total of Ca, Al, and Si contents relative to a total of the lithimn metal composite oxide is 10 to 1000 ppm by mass.
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