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公开(公告)号：US20230145387A1
公开(公告)日：2023-05-11
申请号：US17914869
申请日：2021-03-23
Inventor： Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M4/62 , H01M10/0568 , H01M4/525
CPC classification number: H01M4/628 , H01M10/0568 , H01M4/525 , H01M2004/028
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode includes a composite oxide containing lithium and a transition metal, and an additive covering at least a portion of a surface of the composite oxide; the additive includes a cyclic inorganic phosphoric acid compound, the nonaqueous electrolyte includes lithium ion and an anion, and the anion includes an anion of an oxalate complex.
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公开(公告)号：US10069164B2
公开(公告)日：2018-09-04
申请号：US15158592
申请日：2016-05-19
Inventor： Hirotetsu Suzuki , Nobuhiko Hojo
IPC: H01M10/05 , H01M10/0565 , H01M10/0525 , H01M10/0568 , H01M10/0569
Abstract: Provided is an electrolytic solution including a nonaqueous solvent and an alkali metal salt. The alkali metal salt is dissolved in the nonaqueous solvent. The nonaqueous solvent contains a perfluoropolyether. The molecular ends of the perfluoropolyether are each an unsubstituted alkyl ether or an unsubstituted carboxylate. The perfluoropolyether has a repeating unit composed of a perfluoroalkyl chain and an oxygen atom. Also provided is a battery including the electrolytic solution, a positive electrode containing a positive electrode active material that can occlude and release an alkali metal cation, and a negative electrode containing a negative electrode active material that can occlude and release the alkali metal cation.
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公开(公告)号：US20240322232A1
公开(公告)日：2024-09-26
申请号：US18269392
申请日：2021-12-22
Inventor： Kohei Hara , Motohiro Sakata , Hirotetsu Suzuki
IPC: H01M10/0565 , C08B15/05 , H01M10/052 , H01M50/429
CPC classification number: H01M10/0565 , C08B15/05 , H01M10/052 , H01M50/4295 , H01M2300/0082
Abstract: An alkali metal ion conductive solid electrolyte including an organic polymer having an alkali metal sulfonate group, wherein the alkali metal sulfonate group is a part of an alkali metal alkyl sulfonate group represented by a formula: —R—SO3X (where R is an alkylene group and X is an alkali metal atom), the organic polymer may be a derivative of a polysaccharide, and the mass (EW value) of the organic polymer per 1 mol of the alkali metal sulfonate group is 168 g/mol or more and 300 g/mol or less.
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公开(公告)号：US11791464B2
公开(公告)日：2023-10-17
申请号：US16847636
申请日：2020-04-13
Inventor： Hirotetsu Suzuki
IPC: H01M4/525 , H01M4/505 , H01M4/66 , H01M10/0525 , H01M10/0569 , H01M4/134 , H01M4/02
CPC classification number: H01M4/525 , H01M4/134 , H01M4/505 , H01M4/667 , H01M10/0525 , H01M10/0569 , H01M2004/021
Abstract: Provided is a cathode active material comprising particles each containing a lithium composite oxide; and a coating layer containing an ammonium phosphate compound and coating each of the particles.
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公开(公告)号：US20230029282A1
公开(公告)日：2023-01-26
申请号：US17786940
申请日：2020-12-22
Inventor： Kohei Hara , Tooru Matsui , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M50/409 , H01M10/0587 , H01M10/0565
Abstract: This separator for nonaqueous electrolyte secondary batteries contains a polymer compound and a solid electrolyte, and has a pore volume of 0.06 cm3/gor less.
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Patent Agency Ranking
公开(公告)号：US20240363847A1
公开(公告)日：2024-10-31
申请号：US18580806
申请日：2022-07-01
Inventor： Saifullah Badar , Hirotetsu Suzuki , Motohiro Sakata
CPC classification number: H01M4/48 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode active material for a secondary battery includes Si-containing particles, wherein the Si-containing particles include a silicon compound phase, a silicon phase dispersed in the silicon compound phase, and a silicon nitride phase dispersed in the silicon. compound phase, and the silicon compound phase is at least one of a silicon oxide phase and a silicate phase.
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公开(公告)号：US20240204179A1
公开(公告)日：2024-06-20
申请号：US18555821
申请日：2022-04-12
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/36 , H01M4/62 , H01M10/0525
CPC classification number: H01M4/366 , H01M4/623 , H01M4/625 , H01M10/0525
Abstract: Provided is a non-aqueous electrolyte secondary battery with enhanced discharging performance. A non-aqueous electrolyte secondary battery according to one aspect of the present disclosure is provided with an electrode having: a current collector; and a mixture layer that is formed on a surface of the current collector and that contains an active material, a conducting agent, and a binding agent. The mixture layer contains a first mixture layer facing the current collector and a second mixture layer laminated on a surface of the first mixture layer. A short-circuit resistance R1 of the first mixture layer and a short-circuit resistance R2 of the second mixture layer satisfy the relationship R1
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8.发明公开公开(公告)号：US20240186530A1
公开(公告)日：2024-06-06
申请号：US18285557
申请日：2022-04-12
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/74 , H01M4/02 , H01M4/04 , H01M4/80 , H01M10/052 , H01M10/0587
CPC classification number: H01M4/747 , H01M4/0404 , H01M4/0435 , H01M4/806 , H01M10/0587 , H01M2004/021 , H01M10/052
Abstract: Provided is a nonaqueous electrolyte secondary battery having improved discharge characteristics. A nonaqueous electrolyte secondary battery according to one aspect of the present disclosure comprises an electrode including a current collector and a mixture layer that is formed on a surface of the current collector and that contains an active material. The current collector includes an electron conductive layer having a gap on the surface in contact with the mixture layer, and an electrolytic solution is present inside the electron conductive layer.
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公开(公告)号：US20240128448A1
公开(公告)日：2024-04-18
申请号：US18277274
申请日：2022-02-02
Inventor： Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M4/525 , H01M4/505 , H01M4/62 , H01M10/052
CPC classification number: H01M4/525 , H01M4/505 , H01M4/621 , H01M4/625 , H01M10/052
Abstract: An electrode mixture for batteries according to one embodiment contains a binder and an active material which is capable of absorbing and desorbing lithium ions. This electrode mixture additionally contains a layered silicate salt compound; and the content of the layered silicate salt compound is more than 0.1% by mass, and preferably less than 0.9% by mass relative to the mass of the active material. One example of the layered silicate salt compound is at least one kind of smectite. In addition, it is preferable that this electrode mixture additionally contains carbon nanotubes.
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公开(公告)号：US20230420670A1
公开(公告)日：2023-12-28
申请号：US18275522
申请日：2022-02-01
Inventor： Hirotetsu Suzuki , Motohiro Sakata
CPC classification number: H01M4/525 , H01M4/505 , H01M2300/0017
Abstract: An electrode mixture for a battery according to an embodiment of the present invention comprises an active material capable of intercalation and deintercalation of lithium, and an ionic compound bonded to the surface of the active material. The ionic compound contains a binding site to the active material, an organic cation, and a counter anion for the organic cation. The binding site is derived from, for example, a hydrolyzable silyl group. In addition, the content of the suitable ionic compound is, for example, 0.2-1.8 mass % with respect to the mass of the active material.
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