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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：US11990276B2
公开(公告)日：2024-05-21
申请号：US17271271
申请日：2019-09-25
Inventor： Hiroki Hayashi , Motohiro Sakata , Nao Matsumura , Masatoshi Takeshita
IPC: H01G11/06 , H01G11/48 , H01M4/133 , H01M10/0525 , H01M10/0569
CPC classification number: H01G11/06 , H01G11/48 , H01M4/133 , H01M10/0525 , H01M10/0569
Abstract: An electrochemical device includes a pair of electrodes and an electrolytic solution. At least one of the pair of electrodes includes an electrode current collector and an electrode material layer supported by the electrode current collector. The electrode material layer includes at least a conductive polymer. A log differential pore volume distribution of the electrode material layer has at least one peak in a range of a pore diameter of more than or equal to 50 nm.
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公开(公告)号：US20230335734A1
公开(公告)日：2023-10-19
申请号：US18027811
申请日：2021-09-14
Inventor： Saifullah Badar , Motohiro Sakata , Hirotetsu Suzuki
CPC classification number: H01M4/5825 , H01M4/134 , H01M2004/027
Abstract: This negative electrode active material for secondary batteries contains a silicon composite material which is provided with a lithium ion conductive phase that contains silicon, and silicon particles that are dispersed in the lithium ion conductive phase. The silicon composite material contains a nitrogen-containing compound in the surface; and the nitrogen-containing compound is represented by general formula LimSiOxNyMz (wherein 0≤m≤1, 0≤x≤2.5, 0.025≤y≤1.33, 0≤z≤0.5, and M represents a metal element other than Si and Li).
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公开(公告)号：US20230133143A1
公开(公告)日：2023-05-04
申请号：US17915268
申请日：2021-03-23
Inventor： Hirotetsu Suzuki , Motohiro Sakata
Abstract: A positive electrode for a nonaqueous electrolyte secondary battery 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, wherein the additive includes a cyclic inorganic phosphoric acid compound.
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公开(公告)号：US20230070559A1
公开(公告)日：2023-03-09
申请号：US17794356
申请日：2021-01-21
Inventor： Sho Shibata , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M10/0567 , H01M4/38 , H01M10/0525 , H01M4/62
Abstract: An additive for a nonaqueous electrolyte includes a bis-alkoxysilyl compound having two or more silyl groups coupled with an alkylene group or an amino group, the two or more 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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Patent Agency Ranking
公开(公告)号：US20220367863A1
公开(公告)日：2022-11-17
申请号：US17771284
申请日：2020-10-13
Inventor： Tooru Matsui , Hiromi Morita , Yoshiki Iwai , Kohei Hara , Hirotetsu Suzuki , Motohiro Sakata
IPC: H01M4/46 , H01M10/0525 , H01M50/431 , H01M10/0565
Abstract: An aluminum foil comprising an aluminum foil substrate that has a porous region, wherein the porous region is formed throughout the entirety of the aluminum foil substrate in the thickness direction thereof.
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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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8.发明公开公开(公告)号：US20240204166A1
公开(公告)日：2024-06-20
申请号：US18556013
申请日：2022-04-12
Inventor： Akihiro Taniguchi , Motohiro Sakata , Kaoru Inoue , Kensuke Nakura
IPC: H01M4/133 , H01M4/02 , H01M4/04 , H01M4/134 , H01M4/1393 , H01M4/1395
CPC classification number: H01M4/133 , H01M4/0404 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode for a secondary battery according to one aspect of the present disclosure is characterized by comprising a negative electrode current collector and a negative electrode mixture layer disposed on the negative electrode current collector, and is characterized in that: the negative electrode mixture layer contains a negative electrode active material including a carbon material and a Si-based material; a pore diameter distribution of the negative electrode mixture layer as measured by a mercury press-in method has two peak values R1 and R2; the peak value R1 is in the range of 0.5-1.5 μm; the peak value R2 is in the range of 2-10 μm; an average particle diameter of the Si-based material is 4 μm or more; and the contained amount of the Si-based material with respect to the total amount of the negative electrode active material is 30 mass % or more.
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9.发明公开公开(公告)号：US20240174521A1
公开(公告)日：2024-05-30
申请号：US18284675
申请日：2022-03-28
Inventor： Saifullah Badar , Motohiro Sakata
CPC classification number: C01B33/32 , H01M4/0471 , H01M4/48 , H01M4/583 , H01M10/00 , C01P2002/01 , C01P2002/85 , C01P2002/86 , C01P2004/04 , C01P2004/62 , C01P2004/64 , C01P2006/40 , C01P2006/90 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode active material for a secondary battery includes a composite material including an active phase that reacts with Li and an amorphous material phase, wherein the active phase is dispersed in the amorphous material phase, and the amorphous material phase includes Si, O, and C.
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公开(公告)号：US20240088352A1
公开(公告)日：2024-03-14
申请号：US18273902
申请日：2022-01-24
Inventor： Kaoru Inoue , Motohiro Sakata , Akihiro Taniguchi
Abstract: Provided is a negative electrode active material for secondary batteries that is capable of inhibiting negative electrode swelling and the decline of the charge/discharge cycle characteristics of a battery. A negative electrode active material for secondary batteries according to the present disclosure is characterized by including a Si-based material, activated carbon, and a conductive material, and in that the Si-based material and the conductive material are carried in pores of the activated carbon.
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