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Patent Agency Ranking
公开(公告)号：US11430976B2
公开(公告)日：2022-08-30
申请号：US16629205
申请日：2018-08-21
Inventor： Youichirou Uka , Rie Matsuoka
Abstract: A positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the current collector. The positive electrode mixture layer includes a lithium transition metal composite oxide containing 50 mol % or more Ni relative to the total number of moles of metal element or elements except Li, a conductive carbon material, and an adhesion improver capable of attaching to the lithium transition metal composite oxide and the carbon material. The adhesion improver contains a Lewis acidic group, a Lewis basic group, and an aromatic ring-containing hydrophobic group.
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公开(公告)号：US20220416229A1
公开(公告)日：2022-12-29
申请号：US17775076
申请日：2020-09-17
Inventor： Rie Matsuoka , Takeshi Ogasawara , Katsuya Inoue , Yoshinori Aoki
Abstract: This positive electrode active material used in a non-aqueous electrolyte secondary battery includes a lithium transition metal composite oxide containing Al and Ni in an amount of at least 80 mol % with respect to the total number of moles of metal elements excluding Li, wherein a primary particle of the lithium transition metal composite oxide has a surface modification layer containing at least Ca on the surface thereof.
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公开(公告)号：US12113198B2
公开(公告)日：2024-10-08
申请号：US17426045
申请日：2019-12-18
Inventor： Youichirou Uka , Rie Matsuoka
CPC classification number: H01M4/131 , H01M4/0404 , H01M4/133 , H01M4/505 , H01M4/525 , H01M4/621 , H01M50/107 , H01M2004/027 , H01M2004/028
Abstract: This positive electrode for nonaqueous electrolyte secondary batteries is provided with a collector and a mixture layer that is formed on the collector. The mixture layer comprises: a lithium transition metal oxide that contains more than 50% by mole of Ni relative to the total number of moles of metal elements other than Li; a carbon material; a polymer compound that is soluble in N-methyl-2-pyrrolidone, while having a ring structure in each repeating unit; and a polyoxyethylene amine compound.
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公开(公告)号：US11462726B2
公开(公告)日：2022-10-04
申请号：US16629205
申请日：2018-08-21
Inventor： Youichirou Uka , Rie Matsuoka
Abstract: A positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the current collector. The positive electrode mixture layer includes a lithium transition metal composite oxide containing 50 mol % or more Ni relative to the total number of moles of metal element or elements except Li, a conductive carbon material, and an adhesion improver capable of attaching to the lithium transition metal composite oxide and the carbon material. The adhesion improver contains a Lewis acidic group, a Lewis basic group, and an aromatic ring-containing hydrophobic group.
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公开(公告)号：US20220115635A1
公开(公告)日：2022-04-14
申请号：US17426045
申请日：2019-12-18
Inventor： Youichirou Uka , Rie Matsuoka
Abstract: This positive electrode for nonaqueous electrolyte secondary batteries is provided with a collector and a mixture layer that is formed on the collector. The mixture layer comprises: a lithium transition metal oxide that contains more than 50% by mole of Ni relative to the total number of moles of metal elements other than Li; a carbon material; a polymer compound that is soluble in N-methyl-2-pyrrolidone, while having a ring structure in each repeating unit; and a polyoxyethylene amine compound.
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