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公开(公告)号：US20230231122A1
公开(公告)日：2023-07-20
申请号：US17976456
申请日：2022-10-28
Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Akio MITSUI , Yasunari SUGITA , Kenji NAGAO , Izuru SASAKI , Yasutaka TSUTSUI , Takaaki TAMURA , Hiroki KAMITAKE
CPC classification number: H01M4/485 , H01M4/48 , H01M4/386 , H01M4/587 , H01M4/622 , H01M4/623 , H01M10/0562 , H01M10/0525
Abstract: There is provided an electrode layer for an all-solid state battery, which contains an electrode active material and a sulfide solid electrolyte, where the sulfide solid electrolyte has an average particle diameter of less than 1 µm and the electrode layer contains an imidazoline-based dispersion material.
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公开(公告)号：US20240356040A1
公开(公告)日：2024-10-24
申请号：US18759083
申请日：2024-06-28
Inventor： Kenji NAGAO , Yusuke NISHIO , Izuru SASAKI
IPC: H01M4/62 , H01M4/02 , H01M4/131 , H01M4/36 , H01M4/525 , H01M10/0525 , H01M10/0562 , H01M10/42
CPC classification number: H01M4/625 , H01M4/131 , H01M4/366 , H01M4/525 , H01M10/0525 , H01M10/0562 , H01M10/4235 , H01M2004/028 , H01M2300/0068
Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. In the positive electrode material, 30≤X≤80 is satisfied, where X is a value determined by the following equation (1): X=A×B Equation (1). In the equation (1), A is a BET specific surface area (m2/g) of the conductive material, and B is a ratio (%) of a mass (g) of the conductive material to a mass (g) of the positive electrode active material.
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公开(公告)号：US20250007008A1
公开(公告)日：2025-01-02
申请号：US18748705
申请日：2024-06-20
Inventor： Akio MITSUI , Hiroo NOZAKI , Kenji NAGAO
IPC: H01M10/42 , H01M10/0562
Abstract: An electrode for a solid-state battery includes a sulfide solid electrolyte, and a metal that reacts with the sulfide solid electrolyte to exhibit electron conductivity. The content of the metal, with respect to the total volume of the electrode for a solid-state battery, is greater than or equal to 5 ppm by volume and less than 10,000 ppm by volume.
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Patent Agency Ranking
公开(公告)号：US20240170638A1
公开(公告)日：2024-05-23
申请号：US18512677
申请日：2023-11-17
Inventor： Akio MITSUI , Kenji NAGAO , Izuru SASAKI
IPC: H01M4/04 , H01M10/0525 , H01M10/0562
CPC classification number: H01M4/0447 , H01M10/0525 , H01M10/0562 , H01M2300/0068
Abstract: A method of manufacturing a solid-state battery, the method including: over-discharging the solid-state battery having a solid sulfide electrolyte layer.
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公开(公告)号：US20240356039A1
公开(公告)日：2024-10-24
申请号：US18759052
申请日：2024-06-28
Inventor： Kenji NAGAO , Yusuke NISHIO , Izuru SASAKI
IPC: H01M4/62 , H01M4/02 , H01M4/36 , H01M10/0525 , H01M10/0562
CPC classification number: H01M4/625 , H01M4/366 , H01M10/0525 , H01M10/0562 , H01M2004/021 , H01M2004/028 , H01M2300/0068
Abstract: A positive electrode material according to the present disclosure includes a mixture of a positive electrode active material, a solid electrolyte, and a conductive material. The conductive material includes a first conductive material having an average long-axis diameter of 1 μm or more and a second conductive material having an average particle diameter of more than 23 nm and 100 nm or less. A ratio of a volume of the positive electrode active material to a sum of the volume of the positive electrode active material and a volume of the solid electrolyte is 50% or more and 90% or less. A battery according to the present disclosure includes a positive electrode including the positive electrode material, a negative electrode, and an electrolyte layer disposed between the positive electrode and the negative electrode.
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公开(公告)号：US20230238515A1
公开(公告)日：2023-07-27
申请号：US18078222
申请日：2022-12-09
Inventor： Ryuto SAKAMOTO , Kenji NAGAO , Izuru SASAKI , Yusuke NISHIO , Hiroki KAMITAKE
CPC classification number: H01M4/366 , H01M4/131 , H01M4/463 , H01M4/621 , H01M2004/028
Abstract: A positive electrode includes a positive electrode current collector, an adhesive layer, and a positive electrode layer. The positive electrode current collector, the adhesive layer, and the positive electrode layer are stacked in this order. The adhesive layer contains spherical carbon and fibrous carbon as an electrically conductive material, and contains an acrylic binder as an adhesive.
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公开(公告)号：US20230299283A1
公开(公告)日：2023-09-21
申请号：US18114479
申请日：2023-02-27
Inventor： Kazuki MURAISHI , Masaru KUBOTA , Izuru SASAKI , Kenji NAGAO
IPC: H01M4/525 , H01M10/0562 , C01G53/00
CPC classification number: H01M4/525 , H01M10/0562 , C01G53/42 , H01M2300/0068
Abstract: In a method for producing a coated active material, a coating layer containing Nb is formed on at least a part of a surface of an active material. The method includes: transforming a slurry containing the active material and a coating solution containing Nb into droplets to obtain slurry droplets; drying the slurry droplets in a heated gas stream to obtain a precursor; and baking the precursor. When obtaining the slurry droplets, a temperature of the slurry before the slurry is transformed into droplets is 5° C. or more and less than 25° C.
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公开(公告)号：US20230299272A1
公开(公告)日：2023-09-21
申请号：US18179690
申请日：2023-03-07
Inventor： Kazuki MURAISHI , Masaru KUBOTA , Yusuke NISHIO , Kenji NAGAO
CPC classification number: H01M4/366 , H01M4/505 , H01M4/525 , C01G53/42 , C01G53/50 , C01P2006/40 , C01P2004/86
Abstract: A main object of the present disclosure is to provide a coated active material capable of reducing a battery resistance. The present disclosure achieves the object by providing a coated active material comprising: an active material including Ni, and a coating layer configured to coat at least a part of a surface of the active material, and a NiO layer is formed between the active material and the coating layer, and an average thickness of the NiO layer is 0.9 nm or less.
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