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公开(公告)号：US11038170B2
公开(公告)日：2021-06-15
申请号：US16405326
申请日：2019-05-07
Inventor： Kazuko Asano , Kensuke Nakura
Abstract: An active material for a fluoride ion secondary battery includes a metal composite fluoride. The metal composite fluoride contains at least one metal selected from the group consisting of an alkali metal, an alkaline earth metal, scandium, yttrium, and a lanthanoid; a first transition metal; a second transition metal different from the first transition metal; and fluorine.
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公开(公告)号：US11031584B2
公开(公告)日：2021-06-08
申请号：US15963991
申请日：2018-04-26
Inventor： Tooru Matsui , Junichi Sakamoto , Kazuko Asano , Akira Kano , Kensuke Nakura
IPC: H01M4/134 , H01M10/0525 , H01M4/46 , H01M4/04 , H01M4/131 , H01M4/1391 , H01M4/62 , H01M10/058 , H01M10/052 , H01M10/42 , H01M4/38 , H01M4/02 , H01M4/1395
Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode includes: an electrically conductive layer having a surface; and lithium metal pieces arranged spaced from each other on the surface of the electrically conductive layer. There is no lithium metal on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the electrically conductive layer and traversing a space between the lithium metal pieces.
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公开(公告)号：US11018332B2
公开(公告)日：2021-05-25
申请号：US15963992
申请日：2018-04-26
Inventor： Tooru Matsui , Junichi Sakamoto , Kazuko Asano , Akira Kano , Kensuke Nakura
IPC: H01M4/134 , H01M4/04 , H01M4/46 , H01M4/1395 , H01M4/1391 , H01M4/62 , H01M10/0525 , H01M4/131 , H01M4/70 , H01M4/66 , H01M10/052 , H01M4/02
Abstract: A lithium secondary battery includes: a positive electrode; a negative electrode including a negative electrode collector having a surface, on which a lithium metal is deposited during charge; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte solution filled between the positive electrode and the negative electrode. The negative electrode collector includes projection portions projecting from the surface toward the separator. There is no projection portion on an imaginary line extending from a first end to a second end opposite to the first end of the surface of the negative electrode collector and traversing a space between the projection portions.
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44.发明授权公开(公告)号：US10923731B2
公开(公告)日：2021-02-16
申请号：US16384426
申请日：2019-04-15
Inventor： Akira Kano , Ryohei Miyamae , Kiyohiro Isii , Kensuke Nakura
IPC: H01M4/78 , H01M4/38 , H01M10/052 , H01M10/0587 , H01M4/02
Abstract: A lithium secondary battery comprises an electrode group and a nonaqueous electrolyte having lithium-ion conductivity. A negative electrode current collector has a first surface facing outward of winding of the electrode group and a second surface facing inward of the winding of the electrode group. At least the first surface or the second surface includes a first region and a second region that is closer to an innermost circumference of the winding of the electrode group than the first region. Protrusions include outer-circumference-side protrusions disposed on the first region and inner-circumference-side protrusions disposed on the second region. A first average height of the outer-circumference-side protrusions is smaller than a second average height of the inner-circumference-side protrusions.
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公开(公告)号：US09873099B2
公开(公告)日：2018-01-23
申请号：US15062951
申请日：2016-03-07
Inventor： Kazuyoshi Honda , Kensuke Nakura , Ryuichi Natsui
CPC classification number: B01J3/03 , B01J19/02 , B01J2219/0277 , B01J2219/0286 , B01J2219/029 , B01J2219/1227 , B01J2219/1242 , B01J2219/1293 , B01J2219/1296 , F24V30/00
Abstract: Heating reaction container comprises: a first member; a second member; and a third member. An opening is closed by the second member being detachably fitted in the first member and by the third member being detachably fitted in the second member. α1, α2, and α3 satisfy a relation of α3>α2>α1, α3=α2>α1, or α3>α2=α1, where α1 represents a thermal expansion coefficient of a first material of the first member, α2 represents a thermal expansion coefficient of a second material of the second member, and α3 represents a thermal expansion coefficient of a third material of the third member. A gap is present before heating, and a space is sealed, through the heating, by a first contact surface coming into intimate contact with a second contact surface and by a third contact surface coming into intimate contact with a fourth contact surface.
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Patent Agency Ranking
公开(公告)号：US20250132325A1
公开(公告)日：2025-04-24
申请号：US18687449
申请日：2022-07-20
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/525 , H01M4/02 , H01M4/66 , H01M10/052
Abstract: A positive electrode with a positive electrode mixture layer provided on a surface of a positive electrode current collector, which includes a first layer contacting the positive electrode current collector and a second layer contacting the first layer. The first layer includes first active material particles with a particle diameter L. The second layer includes active material particles with a particle diameter R. Third positive electrode active material particles with a particle diameter r are included at least at an interface between the first and the second layers, wherein R>L>r. The first active material particles include a lithium transition metal composite oxide with a ratio of Co in metal element atoms other than Li of 2 atom % or more. The second and third active material particles including a different lithium transition metal composite oxide than the first active material particles.
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47.发明公开公开(公告)号：US20240021813A1
公开(公告)日：2024-01-18
申请号：US18267359
申请日：2021-12-23
Inventor： Shogo Esaki , Ryuichi Natsui , Junko Matsushita , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/525 , H01M4/505 , H01M4/58 , H01M10/0569 , H01M10/0568 , H01M10/0525
CPC classification number: H01M4/525 , H01M4/505 , H01M4/582 , H01M10/0569 , H01M10/0568 , H01M10/0525 , H01M2004/027
Abstract: A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present invention contains a lithium transition metal composite oxide which is represented by composition formula LixMnyNizTiaMbO2-cFc (wherein M represents at least one element that is selected from among P, Co, Si, Sr, Nb, W, Mo, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, Bi and Al; 1.0
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48.发明公开公开(公告)号：US20230402594A1
公开(公告)日：2023-12-14
申请号：US18028364
申请日：2021-09-14
Inventor： Ryuichi Natsui , Junko Matsushita , Mitsuhiro Hibino , Kensuke Nakura
IPC: H01M4/505 , H01M4/1315 , H01M4/525 , C01G53/00
CPC classification number: H01M4/505 , H01M4/1315 , H01M2004/028 , C01G53/50 , H01M4/525
Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries contains a lithium transition metal composite oxide that is represented by composition formula LixMnyNizPaMbO2-cFc(wherein M represents at least one element that is selected from among Ti, Co, Si, Sr, Nb, W, Mo, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K and Bi; 1.0
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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：US20230082835A1
公开(公告)日：2023-03-16
申请号：US17800359
申请日：2021-01-21
Inventor： Youshin Lee , Ryuichi Natsui , Mitsuhiro Hibino , Kensuke Nakura
Abstract: This positive-electrode active material for a non-aqueous electrolyte secondary battery contains a lithium and transition metal composite oxide represented by the composition formula: LixMnyNizSraMbO2-cFc (where, M is at least two elements selected from Ti, Co, Si, Al, Nb, W, Mo, P, Ca, Mg, Sb, Na, B, V, Cr, Fe, Cu, Zn, Ge, Zr, Ru, K, and Bi; 1.0
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