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Patent Agency Ranking
公开(公告)号：US20220293896A1
公开(公告)日：2022-09-15
申请号：US17637537
申请日：2020-06-23
Inventor： Satoshi Shibutani
Abstract: This secondary battery comprises a positive electrode, a negative electrode, a separator positioned between the positive electrode and the negative electrode, and an electrolyte. The positive electrode has a positive electrode current collector, a positive electrode mixture layer containing a positive electrode active material, and an additional layer containing an inactive material. The inactive material is an Li-containing transition metal oxide having a crystal structure belonging to one space group from among Fm3m, C2/M, Immm, and P3m1. The inactive material content of the additional layer is 60 mass % or greater, and the basis weight of the additional layer is 3.8 g/m2 to 50 g/m2 (inclusive).
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公开(公告)号：US11777074B2
公开(公告)日：2023-10-03
申请号：US17273465
申请日：2019-07-25
Inventor： Satoshi Shibutani , Yuki Tokuda
CPC classification number: H01M4/131 , H01M4/381 , H01M4/58 , H01M4/621 , H01M4/661 , H01M4/666 , H01M10/05 , H01M2004/028
Abstract: This positive electrode includes a current collector, an intermediate layer which is formed at least on one surface of the current collector, and a composite material layer which is formed on the intermediate layer. The intermediate layer includes metal compound particles, a conductive material, and a binding material. The metal compound particles comprise at least one selected from a sulfated oxide, hydroxide, or oxide of alkali earth metal or alkali metal.
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公开(公告)号：US20230369592A1
公开(公告)日：2023-11-16
申请号：US18029243
申请日：2021-09-28
Inventor： Satoshi Shibutani , Takahito Nakayama , Shuhei Uchida
IPC: H01M4/587 , H01M10/0525 , H01M4/38 , H01M4/36 , H01M4/58 , H01M4/485 , H01M50/143
CPC classification number: H01M4/587 , H01M4/366 , H01M4/382 , H01M4/485 , H01M4/5825 , H01M10/0525 , H01M50/143 , H01M2004/027
Abstract: The disclosed secondary battery includes a positive electrode and a negative electrode, wherein the negative electrode includes a first layer including at least a negative electrode active material layer, and the first layer further includes a fire retardant including a halogen atom.
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4.发明申请公开(公告)号：US20230046167A1
公开(公告)日：2023-02-16
申请号：US17788092
申请日：2020-10-15
Inventor： Satoshi Shibutani , Takahito Nakayama , Shuhei Uchida
IPC: H01M50/446 , H01M4/62
Abstract: This separator for a nonaqueous electrolyte secondary battery comprises a porous substrate, a heat-resistant layer that is formed on the porous substrate, and clusters of filler particles that are present in dot shapes on the surface of the heat-resistant layer. The filler particles are particles of a compound including at least one of phosphorus, silicon, boron, nitrogen, potassium, sodium, and bromine, and the transformation point at which the filler particles transform from a solid phase to a liquid phase or thermally decompose is in the range 180° C.-1000° C. This separator electrode for a nonaqueous electrolyte secondary battery can suppress heat production of the battery during a nail puncture test, while also suppressing an increase in battery resistance.
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公开(公告)号：US20210218013A1
公开(公告)日：2021-07-15
申请号：US17273465
申请日：2019-07-25
Inventor： Satoshi Shibutani , Yuki Tokuda
Abstract: This positive electrode includes a current collector, an intermediate layer which is formed at least on one surface of the current collector, and a composite material layer which is formed on the intermediate layer. The intermediate layer includes metal compound particles, a conductive material, and a binding material. The metal compound particles comprise at least one selected from a sulfated oxide, hydroxide, or oxide of alkali earth metal or alkali metal.
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