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公开(公告)号：US11894521B2
公开(公告)日：2024-02-06
申请号：US17056229
申请日：2019-02-21
Inventor： Kazuhiro Iida , Takayuki Nakatsutsumi , Atsushi Fukui
IPC: H01M10/0569 , H01M4/36 , H01M4/58 , H01M10/0525 , H01M4/38 , H01M4/02 , H01M4/134 , H01M10/052 , H01M4/136
CPC classification number: H01M10/0569 , H01M4/364 , H01M4/386 , H01M4/5825 , H01M10/0525 , H01M4/134 , H01M4/136 , H01M10/052 , H01M2004/027 , H01M2220/20 , H01M2300/0034 , Y02E60/10
Abstract: A secondary battery includes a negative electrode containing a lithium silicate phase and silicon particles dispersed in the lithium silicate phase and an electrolytic solution containing a fluorine-containing linear carboxylic acid ester represented by R1—(CO)O—CH2—R2 (wherein R1 is an alkyl group and R2 is an alkyl group in which at least one hydrogen atom is substituted with fluorine).
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公开(公告)号：US11637278B2
公开(公告)日：2023-04-25
申请号：US17713609
申请日：2022-04-05
Inventor： Yasuyuki Kusumoto , Yasufumi Takahashi , Atsushi Fukui
Abstract: An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution contained in the positive electrode, the negative electrode and the separator. The negative electrode includes a negative electrode active material including zinc, and an additive. The additive includes at least one selected from the group consisting of maleic acid, maleic anhydride and maleate salts.
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公开(公告)号：US11594720B2
公开(公告)日：2023-02-28
申请号：US16968950
申请日：2019-01-07
Inventor： Hiroshi Kawada , Atsushi Fukui
IPC: H01M4/1391 , H01M4/62 , H01M4/04 , H01M4/136 , H01M4/131
Abstract: A positive electrode for a secondary battery includes a positive electrode current collector and a positive electrode active material layer that contains a positive electrode active material particle and that is disposed on the surface of the positive electrode current collector. The positive electrode active material particle includes a positive electrode active material particle, a first coating that contains oxide X of metal element M1 and that is attached to the surface of the positive electrode active material particle, and a second coating having lithium-ion permeability that is attached to the surface of the first coating. The second coating contains oxide Y represented by LixM2Oy (0.5≤x
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公开(公告)号：US20220271406A1
公开(公告)日：2022-08-25
申请号：US17439959
申请日：2019-11-27
Inventor： Miyuki Nakai , Takayuki Nakatsutsumi , Atsushi Fukui
IPC: H01M50/595 , H01M4/38 , H01M4/40 , H01M6/16 , H01M4/06 , H01M50/571 , H01M50/586
Abstract: A lithium primary battery including a battery case, an electrode group housed in the battery case, and a non-aqueous electrolyte. The non-aqueous electrolyte contains a non-aqueous solvent, a solute, and an additive. The electrode group includes a positive electrode, a negative electrode, and a separator interposed therebetween. The negative electrode includes a metal lithium or lithium alloy foil, and has a shape having a longitudinal direction and a lateral direction, with a long tape attached to at least one principal surface of the negative electrode along the longitudinal direction. The tape includes a resin base material and an adhesive layer, and has a width of 0.5 mm to 3 mm. The additive includes a phosphorus compound having a POn structure having a phosphorus atom and n oxygen atoms bonded to the phosphorus atom, where n=3 or 4.
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公开(公告)号：US20220231275A1
公开(公告)日：2022-07-21
申请号：US17713609
申请日：2022-04-05
Inventor： Yasuyuki Kusumoto , Yasufumi Takahashi , Atsushi Fukui
Abstract: An alkaline dry battery includes a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolytic solution contained in the positive electrode, the negative electrode and the separator. The negative electrode includes a negative electrode active material including zinc, and an additive. The additive includes at least one selected from the group consisting of maleic acid, maleic anhydride and maleate salts.
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Patent Agency Ranking
公开(公告)号：US20220216460A1
公开(公告)日：2022-07-07
申请号：US17604144
申请日：2020-04-24
Inventor： Kosuke Kuroda , Hiroshi Kawada , Atsushi Fukui
Abstract: A positive electrode active material for a secondary battery according to an embodiment contains: a first composite oxide component represented by general formula Liα[LixMnyCozMe(1−x−y−z)]O2 (in the formula, Me is at least one selected from among Ni Fe, Ti, Bi, Nb, W, Mo, and Ta, 0.5
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公开(公告)号：US20220115676A1
公开(公告)日：2022-04-14
申请号：US17427860
申请日：2019-10-25
Inventor： Takayuki Nakatsutsumi , Yasuyuki Kusumoto , Yasufumi Takahashi , Atsushi Fukui
Abstract: An alkaline dry battery, including: a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and an alkaline electrolyte. The positive electrode includes a manganese dioxide, the negative electrode includes zinc and/or a zinc alloy, and the alkaline electrolyte includes at least one sulfonyl group-containing anion selected from the group consisting of a bis(perfluoroalkylsulfonyl)imide anion, a bis(fluorosulfonyl)imide anion, and a fluorosulfonate anion.
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公开(公告)号：US11069886B2
公开(公告)日：2021-07-20
申请号：US16357517
申请日：2019-03-19
Inventor： Hiroshi Kawada , Hiroyuki Matsumoto , Atsushi Fukui
IPC: H01M4/131 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M4/62 , H01M4/04 , H01M4/587 , H01M4/36 , H01M4/139 , H01M4/58 , H01M4/133 , H01M4/136 , H01M4/485 , H01M4/02
Abstract: A negative electrode for a nonaqueous electrolyte secondary battery includes a negative electrode current collector, a negative electrode active material layer provided on the surface of the negative electrode current collector, and a first film which has lithium ion permeability and which coats at least a portion of the surface of the negative electrode active material layer and partially coats the surface of the negative electrode current collector. The first film preferably contains a first lithium compound containing an element M1, an element A1, and lithium. Herein, M1 is at least one selected from the group consisting of P, Si, B, V, Nb, W, Ti, Zr, Al, Ba, La, and Ta; and A1 is at least one selected from the group consisting of F, S, O, N, and Br.
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公开(公告)号：US20210135277A1
公开(公告)日：2021-05-06
申请号：US16640116
申请日：2018-09-21
Inventor： Nobuhiko Hojo , Hiroyuki Matsumoto , Kenji Matsubara , Hiroshi Kawada , Atsushi Fukui
IPC: H01M10/0562 , H01M10/0525 , H01M4/505 , H01M4/525
Abstract: An aqueous rechargeable battery includes: a positive electrode including a positive electrode current collector and a positive electrode active material layer provided on a surface of the positive electrode current collector; a negative electrode including a negative electrode current collector and a negative electrode active material layer provided on a surface of the negative electrode current collector; and an aqueous electrolyte solution containing a lithium salt and water. The positive electrode active material layer contains one or more positive electrode active materials and one or more lithium ion-conducting solid electrolytes; and the positive electrode active materials include a lithium transition metal oxide.
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公开(公告)号：US20200020985A1
公开(公告)日：2020-01-16
申请号：US16580194
申请日：2019-09-24
Inventor： Kazuhiro Iida , Takanobu Chiga , Naoya Morisawa , Atsushi Fukui
IPC: H01M10/0569 , H01M10/052 , H01M6/16
Abstract: A nonaqueous electrolyte includes a lithium salt and a nonaqueous solvent in which the lithium salt is dissolved. The nonaqueous solvent includes a fluorinated chain carboxylate ester and a dicarbonyl compound having two carbonyl groups in the molecule. The dicarbonyl compound is at least one selected from the group consisting of esters and acid anhydrides and has not more than three atoms between the two carbonyl groups.
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