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公开(公告)号：US20210367273A1
公开(公告)日：2021-11-25
申请号：US17054890
申请日：2019-02-19
Inventor： Kenji Matsubara , Nobuhiko Hojo , Hiroyuki Matsumoto , Atsushi Fukui
IPC: H01M10/36
Abstract: An electrolyte solution according to one aspect of the present disclosure comprises water, a lithium salt, and a polycarboxylic acid having two or more carboxylic acid groups. A secondary battery according to one aspect of the present disclosure comprises a positive electrode, a negative electrode, and the electrolyte solution.
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公开(公告)号：US20210296632A1
公开(公告)日：2021-09-23
申请号：US17336566
申请日：2021-06-02
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
Abstract: A method for producing a negative electrode for a nonaqueous electrolyte secondary battery, and a nonaqueous electrolyte secondary battery obtained therewith are disclosed. The negative electrode 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：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：US20210104725A1
公开(公告)日：2021-04-08
申请号：US16497580
申请日：2018-02-14
Inventor： Miyuki Nakai , Yasuyuki Kusumoto , Yusuke Kawahara , Futoshi Tanigawa , Atsushi Fukui
Abstract: A positive electrode, a negative electrode containing lithium, and a nonaqueous electrolyte having lithium ion conductivity are installed. The nonaqueous electrolyte contains a nonaqueous solvent and a solute. The positive electrode contains a positive electrode active material containing at least manganese dioxide, a conductive agent, and a binding agent and further contains an oxide and sulfate of a rare-earth element.
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公开(公告)号：US20210057722A1
公开(公告)日：2021-02-25
申请号：US16968950
申请日：2019-01-07
Inventor： Hiroshi Kawada , Atsushi Fukui
IPC: H01M4/1391 , H01M4/131 , H01M4/62
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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Patent Agency Ranking
公开(公告)号：US20210020957A1
公开(公告)日：2021-01-21
申请号：US16981118
申请日：2018-10-10
Inventor： Miyuki Nakai , Yasuyuki Kusumoto , Atsushi Fukui
Abstract: A lithium primary battery including: a battery case; an electrode group; and a nonaqueous electrolyte; the nonaqueous electrolyte contains a nonaqueous 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 foil composed of metal lithium or a lithium alloy, has a shape extending in a longitudinal direction and a short direction, and provided with a long tape adhered to at least one main surface of the negative electrode along the longitudinal direction thereof; the tape includes a resin substrate and an adhesive layer and has a width of 0.5 to 3 mm; and the additive is a lithium salt represented by the following formula (1): LixMCyOzFα (1≤x≤2, 0≤y≤6, 0≤z≤8, 0≤α≤6, and 1≤y+z+α are satisfied, and y and z are not simultaneously 0), and the element M includes at least one of phosphorus and boron.
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公开(公告)号：US20210005886A1
公开(公告)日：2021-01-07
申请号：US16979398
申请日：2018-10-11
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：US10591125B2
公开(公告)日：2020-03-17
申请号：US15766392
申请日：2016-10-11
Inventor： Atsushi Fukui , Koichiro Ono , Tatsuo Dohi
IPC: F21S41/143 , G02B13/18 , F21S41/63 , G02B3/02 , F21S41/151 , B60Q1/115 , B60Q1/08
Abstract: There is provided a lighting device capable of forming a line beam having a sufficiently long length in an irradiation direction. A distance between a light source end close to irradiation surface and irradiation surface is greater than a distance between lens center and irradiation surface by using light source in which a plurality of light emitters is arranged in a straight line and lens of which an emission surface having a constant curvature is corrected by an odd function. Accordingly, a shape of light source is formed on irradiation surface, and thus, it is possible to form line beam having the sufficiently long length in the irradiation direction.
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公开(公告)号：US20200020986A1
公开(公告)日：2020-01-16
申请号：US16580212
申请日：2019-09-24
Inventor： Yasuko Hirayama , Naoya Morisawa , Takanobu Chiga , Kazuhiro Iida , Atsushi Fukui
IPC: H01M10/0569 , H01M10/0568 , H01M4/525 , H01M10/0525 , H01M10/0567
Abstract: A nonaqueous electrolyte secondary battery according to one embodiment of the present disclosure comprises a positive electrode having a positive electrode active substance layer, a negative electrode having a negative electrode active substance layer, and a nonaqueous electrolyte. The nonaqueous electrolyte contains a sulfonylimide salt and a nonaqueous solvent containing a fluorinated chain carboxylic acid ester represented by a general formula. The fluorinated chain carboxylic acid ester content of the nonaqueous solvent is 80 vol % or greater and the sulfonylimide salt content is 2.4 mol or greater with respect to 1 L of the nonaqueous solvent. (In the formula, R1 and R2 are any one of H, F, and CH3-xFx (where x is 1, 2 or 3), and can be the same or different. R3 is a C1-C3 alkyl group and can contain F.)
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公开(公告)号：US20190214630A1
公开(公告)日：2019-07-11
申请号：US16357517
申请日：2019-03-19
Inventor： Hiroshi Kawada , Hiroyuki Matsumoto , Atsushi Fukui
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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