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公开(公告)号：US20230163285A1
公开(公告)日：2023-05-25
申请号：US17915055
申请日：2021-03-30
Inventor： Nanami Takeda , Yukihiro Oki , Kazuko Asano , Mitsuhiro Hibino
IPC: H01M4/38 , H01M10/0525 , H01M4/62
CPC classification number: H01M4/387 , H01M4/622 , H01M10/0525 , H01M2004/027
Abstract: This lithium ion battery comprises a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material; and this lithium ion battery is charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material that is represented by general formula M3Me2X7 (wherein M contains at least one element of La, Ce, Ba, Sr, Zr, Ca, Mg and Y; Me contains at least one element of Ti, V, Cr, Nb, Mn, Ni, Fe, Co and Cu; and X contains at least one element of Ge, Si, Sn, Al, P, Sb and B), and a binder that contains ammonium carboxymethyl cellulose (NH4—CMC).
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公开(公告)号：US20230335726A1
公开(公告)日：2023-10-19
申请号：US18023209
申请日：2021-08-24
Inventor： Kazuko Asano , Yukihiro Oki , Nanami Takeda , Mitsuhiro Hibino
CPC classification number: H01M4/386 , H01M4/134 , C22C30/00 , H01M2004/027
Abstract: A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a zirconium atom, and the plurality of the second atoms include 8 or more and 16 or less silicon atoms.
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公开(公告)号：US20230141498A1
公开(公告)日：2023-05-11
申请号：US17794076
申请日：2021-01-21
Inventor： Kazuko Asano , Yukihiro Oki , Nanami Takeda , Mitsuhiro Hibino
IPC: H01M4/38 , H01M10/0525 , H01M4/62
CPC classification number: H01M4/387 , H01M4/622 , H01M10/0525 , H01M2004/027
Abstract: Provided is a lithium ion battery with a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material, the lithium ion battery being charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material represented by general formula M3Me2X7 (in the formula, M includes at least one of La and Ca; Me includes at least one of Mn, Ni, Fe, and Co; and X includes at least one of Ge, Si, Sn, and Al), and a binding agent that contains cyano groups, the ratio of the binding agent in the negative electrode mixture layer being 0.5-7.0 mass% (inclusive).
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公开(公告)号：US20230100030A1
公开(公告)日：2023-03-30
申请号：US17800768
申请日：2021-02-25
Inventor： Kazuko Asano , Yukihiro Oki , Nanami Takeda , Mitsuhiro Hibino
IPC: H01M4/38 , H01M10/0525
Abstract: The present invention provides a lithium ion battery which comprises a positive electrode having a positive electrode mixture layer that contains a positive electrode active material, and a negative electrode having a negative electrode mixture layer that contains a negative electrode active material, and which is charged and discharged by the movement of lithium ions between the positive electrode and the negative electrode. The negative electrode mixture layer contains a negative electrode active material represented by general formula La3(1-x)M3xNi2(1-y)Me2yX7 (wherein M contains at least one of Ca, Mg and Sr; Me contains at least one of Mn, Co, Cu and Fe; X contains at least one of Ge, Si, Sn and Al; 0.1≤x
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公开(公告)号：US11038171B2
公开(公告)日：2021-06-15
申请号：US16405385
申请日：2019-05-07
Inventor： Kazuko Asano , Kensuke Nakura , Mitsuhiro Hibino , Jin Zhang
Abstract: An active material for a fluoride ion secondary battery includes a composite fluoride which contains: an alkali metal or NH4; a transition metal; and fluorine.
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Patent Agency Ranking
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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公开(公告)号：US20250055128A1
公开(公告)日：2025-02-13
申请号：US18722065
申请日：2022-11-25
Inventor： Chisaki Hasegawa , Yukihiro Oki , Atsuro Shirakami , Kazuko Asano
IPC: H01M50/411 , H01M4/02 , H01M4/525 , H01M50/403 , H01M50/449
Abstract: Disclosed is a separator for a secondary battery, including: a porous substrate having a first surface a second surface located opposite to the first surface; and a polysaccharide attached to the porous substrate, wherein the polysaccharide has a sulfo group.
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公开(公告)号：US20230275220A1
公开(公告)日：2023-08-31
申请号：US18014842
申请日：2021-08-24
Inventor： Yukihiro Oki , Kazuko Asano , Nanami Takeda , Mitsuhiro Hibino
IPC: H01M4/38
CPC classification number: H01M4/386 , H01M2004/027
Abstract: A negative electrode active material for a secondary battery includes an intermetallic compound having a cage structure. The cage structure is constituted of at least one first atom located within a cage, and a plurality of second atoms arranged in a cage-like form so as to surround the first atom. The first atom is a cerium atom, and the plurality of the second atoms include 8 or more and 17 or less silicon atoms.
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