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公开(公告)号：US20210218064A1
公开(公告)日：2021-07-15
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
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：US10833315B2
公开(公告)日：2020-11-10
申请号：US15813210
申请日：2017-11-15
Inventor： Takayuki Nakatsutsumi , Ryuichi Natsui , Nobuhiko Hojo
IPC: H01M4/1315 , H01M4/505 , H01M4/525 , H01M10/0568 , C01G51/00 , C01G45/00 , C01G53/00 , H01M10/0569 , H01M10/0525 , H01M4/485 , H01M4/02
Abstract: A battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolytic solution including a nonaqueous solvent. The positive electrode active material includes a compound having a crystal structure belonging to a space group FM3-M and represented by Compositional Formula (1): LixMeyOαFβ, where, Me is one or more elements selected from the group consisting of Mn, Co, Ni, Fe, Al, B, Ce, Si, Zr, Nb, Pr, Ti, W, Ge, Mo, Sn, Bi, Cu, Mg, Ca, Ba, Sr, Y, Zn, Ga, Er, La, Sm, Yb, V, and Cr; and subscripts x, y, α, and β satisfy the following requirements: 1.7≤x≤2.2, 0.8≤y≤1.3, 1≤α≤2.5, and 0.5≤β≤2. The nonaqueous solvent includes a solvent having at least one fluoro group.
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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：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：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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Patent Agency Ranking
公开(公告)号：US10559846B2
公开(公告)日：2020-02-11
申请号：US15959294
申请日：2018-04-23
Inventor： Takayuki Nakatsutsumi , Akira Kano , Junko Matsushita , Nobuhiko Hojo
IPC: H01M10/0525 , H01M4/133 , H01M2/20 , H01M4/583 , H01M4/134 , H01M4/66 , H01M4/38 , C01B32/21 , H01M4/587 , H01M4/36 , H01M4/62 , C01B32/205 , H01M4/02
Abstract: A negative-electrode active material comprises a graphite including at least boron and fluorine. The fluorine is disposed at least on a surface of the graphite. A ratio R satisfies 0.5≤R≤1, where R=SBB/SB, and SB denotes a total peak area of a boron 1s spectrum of the graphite obtained by X-ray photoelectron spectroscopy, and SBB denotes a peak area of all spectra each having a peak in a binding energy range of not less than 184.0 eV and not more than 188.5 eV in the boron 1s spectrum.
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公开(公告)号：US09640840B2
公开(公告)日：2017-05-02
申请号：US14553089
申请日：2014-11-25
Inventor： Takayuki Nakatsutsumi , Nobuhiko Hojo , Hirotetsu Suzuki , Yu Otsuka
IPC: H01M10/05 , H01M10/0569 , H01M4/48 , H01M4/587 , H01M10/054 , H01M10/0568
CPC classification number: H01M10/0569 , H01M4/483 , H01M4/587 , H01M10/054 , H01M10/0568 , H01M2300/0034 , H01M2300/0037
Abstract: A sodium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolytic solution including a non-aqueous solvent. The non-aqueous solvent includes a fluoro group-containing chain carboxylic acid ester represented by General Formula (1): wherein R1 is an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; R2, R3 and R4 are each a hydrogen atom, an aromatic group, an unsaturated aliphatic group or a saturated aliphatic group; and at least one of R1, R2, R3 and R4 includes one or more fluoro groups.
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公开(公告)号：US11646446B2
公开(公告)日：2023-05-09
申请号：US16961007
申请日：2018-11-30
Inventor： Kenji Matsubara , Nobuhiko Hojo , Hiroyuki Matsumoto , Takayuki Nakatsutsumi , Kazuhiro Iida , Atsushi Fukui
IPC: H01M4/00 , H01M10/0566 , H01M4/485 , H01M4/66 , H01M10/0525 , H01M10/26
CPC classification number: H01M10/0566 , H01M4/485 , H01M4/661 , H01M10/0525 , H01M10/26 , H01M2300/0002
Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.
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公开(公告)号：US20230096872A1
公开(公告)日：2023-03-30
申请号：US17911492
申请日：2020-12-08
Inventor： Yasuyuki Kusumoto , Yasufumi Takahashi , Takayuki Nakatsutsumi , 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 retained in the positive electrode, the negative electrode, and the separator. The negative electrode includes a negative electrode active material containing zinc, and an additive. The additive includes an aromatic carboxylic acid and tin powder.
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公开(公告)号：US20230092792A1
公开(公告)日：2023-03-23
申请号：US17796205
申请日：2020-10-20
Inventor： Yasufumi Takahashi , Takayuki Nakatsutsumi , Yasuyuki Kusumoto , 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 electrolyte, and the negative electrode includes a negative electrode active material containing zinc, a compound A having a P—O bond, and terephthalic acid. The molar ratio of the compound A to the terephthalic acid is 0.025 or more and 2.5 or less.
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