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公开(公告)号：US20190025381A1
公开(公告)日：2019-01-24
申请号：US16141118
申请日：2018-09-25
Inventor： Yuta Kuroda , Masanobu Takeuchi
IPC: G01R31/36 , H01M10/0525 , H01M10/48
Abstract: A life estimation apparatus includes a second calculation unit that calculates a remaining capacity, which is a capacity with which the lithium ion secondary cell is capable of being charged or which the lithium ion secondary cell is capable of discharging, based on Equation 1 having an exponent n1 of 0.9 to 1.1 and Equation 2 having an exponent n2 of 0.4 to 0.6. The second calculation unit calculates the remaining capacity using Equation 1 if the amount of change of open circuit voltage, the amount of change of a voltage rise width, or the amount of change of a voltage rise rate has a positive value and calculates the remaining capacity using Equation 2 if the amount of change of the open circuit voltage, the amount of change of the voltage rise width, or the amount of change of the voltage rise rate has a negative value.
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12.发明公开公开(公告)号：US20230369610A1
公开(公告)日：2023-11-16
申请号：US18246781
申请日：2021-04-27
Inventor： Kohei Saito , Takayuki Nakatsutsumi , Masanobu Takeuchi
CPC classification number: H01M6/14 , H01M4/505 , H01M4/06 , H01M4/66 , H01M4/134 , H01M4/70 , H01M2300/0017
Abstract: A lithium primary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte. The positive electrode contains a positive electrode material mixture that contains LixMnO2 (0≤x≤0.05). The negative electrode contains at least one of metal lithium and a lithium alloy. The non-aqueous electrolyte contains at least one of a cyclic imide component and a parole component as a first component and an oxalate phosphate complex component as a second component. The concentration of the first component in the non-aqueous electrolyte is 1 mass % or less. The concentration of the second component in the non-aqueous electrolyte is 6 mass % or less. The mass ratio of the first component relative to the second component in the non-aqueous electrolyte is 0.02 or more and 10 or less.
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公开(公告)号：US20230058362A1
公开(公告)日：2023-02-23
申请号：US17795680
申请日：2020-12-01
Inventor： Kenji Matsubara , Masanobu Takeuchi
IPC: H01M4/583 , H01M10/0568 , H01M10/0569
Abstract: Provided is a negative electrode active material that is applied in an aqueous secondary battery in which is used an aqueous electrolyte containing water and a lithium salt. The negative electrode active material contains hardly-graphitizable carbon, and the hardly-graphitizable carbon has a C—F bond group on the surface thereof. In an XPS spectrum obtained through X-ray photoelectron spectroscopy, when the peak intensity near 688 eV originating from C—F bonds of the hardly-graphitizable carbon is denoted by I688eV, the peak intensity near 284 eV originating from C—C bonds is denoted by I284eV, a ratio of the peak intensity I688eV to the peak intensity I284eV (value of I688eV/I284eV) is denoted by X, and the BET specific surface area (m2/g) is denoted by Y, the X and Y satisfy Y
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公开(公告)号：US20220359871A1
公开(公告)日：2022-11-10
申请号：US17619707
申请日：2020-06-16
Inventor： Kenji Matsubara , Hiroshi Kawada , Atsushi Fukui , Masanobu Takeuchi
IPC: H01M4/583 , H01M10/0525 , H01M10/0562
Abstract: A secondary battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a carbon material electrochemically capable of absorbing and releasing lithium ions, and a solid electrolyte covering at least part of a surface of the carbon material and having lithium ion conductivity. The solid electrolyte includes a first compound represented by a general formula: LixM1Oy, where 0.5
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公开(公告)号：US20220173399A1
公开(公告)日：2022-06-02
申请号：US17439996
申请日：2020-01-15
Inventor： Kenji Matsubara , Nobuhiko Hojo , Masanobu Takeuchi , Atsushi Fukui
IPC: H01M4/62 , H01M10/0568 , H01M4/587 , H01M4/133 , H01M10/0525
Abstract: A secondary battery according to the present invention is provided with a positive electrode, a negative electrode and an electrolyte solution; the electrolyte solution contains water and a lithium salt; the negative electrode contains a negative electrode active material; a silane coupling agent, which is reductively decomposed at a potential that is higher than the reductive decomposition potential of water, is adhered to the surface of the negative electrode active material; and the silane coupling agent contains fluorine as a constituent element.
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Patent Agency Ranking
公开(公告)号：US20210359301A1
公开(公告)日：2021-11-18
申请号：US17277482
申请日：2019-09-19
Inventor： Tomoki Tsuji , Takeshi Ogasawara , Masanobu Takeuchi , Noriko Fukamichi
Abstract: A nonaqueous electrolyte secondary battery includes: a positive electrode containing a positive electrode active material; a negative electrode containing a negative electrode active material; and a nonaqueous electrolyte. The positive electrode active material includes a complex oxide containing lithium and metal M excluding lithium, where a plurality of primary particles of the complex oxide are aggregated to form a secondary particle. The metal M includes at least nickel and aluminum and/or manganese, where an atomic ratio of nickel to the metal M (Ni/M) is 0.8 or more and less than 1.0. The primary particles have an average particle size of 0.20 μm or more and 0.35 μm or less.
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公开(公告)号：US20210057710A1
公开(公告)日：2021-02-25
申请号：US17049412
申请日：2019-02-19
Inventor： Masanobu Takeuchi , Manabu Takijiri , Yoshio Kato , Masahiro Shiraga
IPC: H01M2/26 , H01M10/0587 , H01M2/02 , H01M10/0567 , H01M4/587 , H01M4/133 , H01M10/0525
Abstract: A nonaqueous electrolyte secondary battery (10) according to one embodiment of the present disclosure is provided with: an electrode body (14) which is obtained by winding a positive electrode (30) and a negative electrode (40), with a separator (50) being interposed therebetween; a nonaqueous electrolyte; and a battery case (15) which is formed of a metal and contains the electrode body (14) and the nonaqueous electrolyte. The negative electrode (40) comprises a negative electrode collector (41) and a negative electrode active material layer (42) that contains graphite particles as a negative electrode active material; the outer circumferential surface of the electrode body (14) is provided with an exposure part (43) from which the negative electrode collector (41) is exposed so as to be in contact with the inner circumferential surface of the battery case (15); and the graphite particles have a compressive strength of 15 MPa or more.
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公开(公告)号：US20190386341A1
公开(公告)日：2019-12-19
申请号：US16480847
申请日：2018-01-17
Inventor： Ryo Kazawa , Yuta Kuroda , Masanobu Takeuchi
IPC: H01M10/0569 , H01M4/133 , H01M4/62
Abstract: Provided is a nonaqueous electrolyte secondary battery comprising: a negative electrode having a negative electrode active substance layer; a positive electrode; and a nonaqueous electrolyte containing a nonaqueous solvent. The negative electrode active substance layer contains: a negative electrode active substance containing a carbon-based active substance; and layered silicate particles. The nonaqueous solvent contains a fluorine-based solvent.
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公开(公告)号：US12237509B2
公开(公告)日：2025-02-25
申请号：US17619707
申请日：2020-06-16
Inventor： Kenji Matsubara , Hiroshi Kawada , Atsushi Fukui , Masanobu Takeuchi
IPC: H01M4/583 , H01M4/02 , H01M10/0525 , H01M10/0562
Abstract: A secondary battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a carbon material electrochemically capable of absorbing and releasing lithium ions, and a solid electrolyte covering at least part of a surface of the carbon material and having lithium ion conductivity. The solid electrolyte includes a first compound represented by a general formula: LixM1Oy, where 0.5
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公开(公告)号：US20230291005A1
公开(公告)日：2023-09-14
申请号：US18018339
申请日：2021-06-14
Inventor： Kazuhiro Iida , Masanobu Takeuchi
IPC: H01M10/0562 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/583
CPC classification number: H01M10/0562 , H01M10/0525 , H01M4/505 , H01M4/525 , H01M4/583 , H01M2004/027
Abstract: This lithium ion secondary battery includes: a negative electrode; a positive electrode; a non-aqueous electrolyte which is water repellant and contains a lithium salt; and an aqueous solid electrolyte which contains a lithium salt. The aqueous solid electrolyte contacts only the positive electrode, from between the negative electrode and the positive electrode. The non-aqueous electrolyte contacts at least the negative electrode, from between the negative electrode and the positive electrode.
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