ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING ELECTRODE ASSEMBLY

    公开(公告)号:US20240258530A1

    公开(公告)日:2024-08-01

    申请号:US18484883

    申请日:2023-10-11

    Abstract: An electrode accommodated in an exterior material includes a positive electrode, the positive electrode including a positive electrode substrate and a positive active material layer disposed on both sides of the positive electrode substrate, a negative electrode, and a separator between the positive electrode and the negative electrode, wherein the positive electrode is at an outermost side of the electrode assembly, the positive electrode substrate includes a first surface and a second surface opposite to the first surface, the first surface and the second surface include, respectively, a first or second coated portion on which the positive active material layer is located and a first or second uncoated portion free from the positive active material layer, a first ceramic coating layer is on the first uncoated portion and a second ceramic coating layer is on the second uncoated portion, and the first ceramic coating layer directly faces the exterior material.

    Electrode plate, electrochemical apparatus, battery module, battery pack, and device

    公开(公告)号:US12051811B2

    公开(公告)日:2024-07-30

    申请号:US17112749

    申请日:2020-12-04

    CPC classification number: H01M4/662 H01M4/663 H01M4/664 H01M4/667

    Abstract: This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The bonding agent in the conductive primer layer includes a water-based bonding agent. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.

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