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公开(公告)号：US20240162443A1
公开(公告)日：2024-05-16
申请号：US18281080
申请日：2022-03-10
CPC分类号： H01M4/623 , H01M4/139 , H01M2004/021 , H01M2004/028
摘要： The present invention provides a positive electrode for nonaqueous electrolyte secondary batteries, the positive electrode having improved adhesion, while suppressing variation in battery characteristics. A positive electrode for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure comprises a positive electrode collector and a positive electrode mixture layer that is formed on the surface of the positive electrode collector; the positive electrode mixture layer contains a positive electrode active material, a conductive agent and a binder; the weight average molecular weight of the binder is 1,300,000 or more; and D10 and D90 in the particle size distribution of the binder satisfy (D90-D10)≥100 μm.
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公开(公告)号：US20240154119A1
公开(公告)日：2024-05-09
申请号：US18281671
申请日：2022-03-08
发明人： Hideaki Fujiwake , Yuta Ichikawa , Takeshi Chiba
IPC分类号： H01M4/583 , H01M4/02 , H01M4/36 , H01M4/38 , H01M10/052
CPC分类号： H01M4/583 , H01M4/364 , H01M4/366 , H01M4/382 , H01M10/052 , H01M2004/028
摘要： A non-aqueous electrolyte secondary battery according to one embodiment of the present invention is provided with a positive electrode, a negative electrode, a non-aqueous electrolyte and a cladding. The cladding has a safety mechanism which operates when the internal pressure reaches a predetermined value. The positive electrode includes a positive electrode core and a positive electrode mixture layer formed on the positive electrode core. The positive electrode mixture layer includes a positive electrode active material, and 0.05-2 mass % of lithium carbonate relative to the mass of the positive electrode active material, and the lithium carbonate is present in a non-uniform concentration distribution in the thickness direction of the positive electrode mixture layer.
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