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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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公开(公告)号：US20230395852A1
公开(公告)日：2023-12-07
申请号：US18034172
申请日：2021-10-28
Inventor： Sho Shibata , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M10/0567 , H01M4/134 , H01M4/38 , H01M10/052 , C07F7/18
CPC classification number: H01M10/0567 , H01M4/134 , H01M4/386 , H01M10/052 , C07F7/1804
Abstract: An alkoxysilyl compound includes two or more silyl groups bonded with a chain including an ether group, wherein the two or more silyl groups each has at least one selected from the group consisting of an alkoxy group and an oxy alkyl group. The alkoxysilyl compound is added to a non-aqueous electrolyte as an additive for a non-aqueous electrolyte.
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公开(公告)号：US11569519B2
公开(公告)日：2023-01-31
申请号：US16488193
申请日：2018-02-09
Inventor： Hitoshi Ishimoto , Kazuya Yamasaki , Motohiro Sakata
IPC: H01M8/1004 , H01M4/86 , H01M4/02
Abstract: A membrane electrode assembly includes an electrolyte membrane, and a pair of electrode layers which sandwich the electrolyte membrane. The pair of electrode layers include a pair of catalyst layers which sandwich the electrolyte membrane, and a pair of gas diffusion layers disposed on the pair of catalyst layers on opposite sides to the electrolyte membrane. At least one catalyst layer contains a fibrous electric conductor, catalyst particles, a particulate electric conductor, and a proton-conductive resin. The at least one catalyst layer has a first region at a distance of 200 nm or less from the fibrous electric conductor, and a second region at a distance of more than 200 nm from the fibrous electric conductor. Pores are present in the first and second regions. A mode diameter M1 of the pores in the first region and a mode diameter M2 of the pores in the second region satisfy M1
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公开(公告)号：US20250132325A1
公开(公告)日：2025-04-24
申请号：US18687449
申请日：2022-07-20
Inventor： Tooru Matsui , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata , Kensuke Nakura
IPC: H01M4/525 , H01M4/02 , H01M4/66 , H01M10/052
Abstract: A positive electrode with a positive electrode mixture layer provided on a surface of a positive electrode current collector, which includes a first layer contacting the positive electrode current collector and a second layer contacting the first layer. The first layer includes first active material particles with a particle diameter L. The second layer includes active material particles with a particle diameter R. Third positive electrode active material particles with a particle diameter r are included at least at an interface between the first and the second layers, wherein R>L>r. The first active material particles include a lithium transition metal composite oxide with a ratio of Co in metal element atoms other than Li of 2 atom % or more. The second and third active material particles including a different lithium transition metal composite oxide than the first active material particles.
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Patent Agency Ranking
公开(公告)号：US20240222606A1
公开(公告)日：2024-07-04
申请号：US18557308
申请日：2022-04-28
Inventor： Sho Shibata , Hirotetsu Suzuki , Motohiro Sakata
CPC classification number: H01M4/366 , C01B33/32 , C07F7/1804 , H01M4/386 , H01M4/5825 , H01M4/60 , C01P2006/40 , H01M2004/027 , H01M4/625
Abstract: The disclosed negative electrode active material for a nonaqueous electrolyte secondary battery includes active material particles containing silicon, and a surface layer formed on surfaces of the active material particles. The surface layer contains a reaction product of a compound allowed to react so as to form a siloxane bond. The compound includes a structure represented by Si-R1-Si. The R1 is an atomic group having a chain portion including, as constituent elements, an alkylene group and at least one selected from the group consisting of a sulfur atom, an oxygen atom, and a nitrogen atom. The two Si's are each bound with at least one atomic group selected from the group consisting of an alkoxy group having 1 to 6 carbon atoms, and the like.
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公开(公告)号：US20230253560A1
公开(公告)日：2023-08-10
申请号：US18014536
申请日：2021-06-24
Inventor： Keisuke Asaka , Motohiro Sakata
CPC classification number: H01M4/525 , H01M4/625 , H01M4/505 , H01M2004/028
Abstract: The positive electrode for a secondary battery includes a positive electrode mixture layer including a positive electrode active material and a conductive material; the positive electrode active material includes a lithium transition metal composite oxide including at least Ni; and the conductive material includes a carbon fiber having an average fiber diameter d of 5 μm or more and 30 μm or less, and an average fiber length L of 50 μm or more and 2000 μm or less.
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公开(公告)号：US20230091033A1
公开(公告)日：2023-03-23
申请号：US17795174
申请日：2021-01-21
Inventor： Sho Shibata , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M10/0567 , H01M10/0525 , H01M4/134 , H01M4/38
Abstract: An additive for a nonaqueous electrolyte includes a bis-alkoxysilyl compound, wherein the bis-alkoxysilyl compound has two silyl groups coupled with a chain including a sulfide group, the two silyl groups each has at least one selected from the group consisting of an alkoxy group and an oxyalkyl group, and the oxyalkyl group is represented by —O—(CxH2x+1Oy), where x is an integer of 1 or more, and y is an integer of 1 or more.
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29.发明申请公开(公告)号：US20230078924A1
公开(公告)日：2023-03-16
申请号：US17801934
申请日：2021-02-25
Inventor： Saifullah Badar , Takuji Tsujita , Keisuke Asaka , Hirotetsu Suzuki , Motohiro Sakata
Abstract: A negative electrode for a secondary battery includes a negative electrode mixture layer having a negative electrode active material, a first layer covering at least a portion of a surface of the negative electrode active material, and a second layer covering at least a portion of a surface of the first layer, wherein the first layer includes a carbon material, and the second layer includes silicone.
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公开(公告)号：US20230059278A1
公开(公告)日：2023-02-23
申请号：US17795684
申请日：2021-01-21
Inventor： Keisuke Asaka , Takuji Tsujita , Motohiro Sakata
IPC: H01M4/62 , H01M10/0568 , H01M10/0569 , H01M10/0525 , H01M10/0567 , H01M4/04 , H01M4/525
Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode having a positive electrode mixture layer, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode mixture layer includes a positive electrode active material and inactive particles, the positive electrode active material includes a lithium-containing composite oxide, an average particle size D1 of the positive electrode active material and an average particle size D2 of the inactive particles satisfy D1>D2, and a viscosity at 30° C. of the nonaqueous electrolyte is less than 2 mPa·s.
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