ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, BATTERY MODULE, BATTERY PACK, AND EQUIPMENT
DRIVE
August 23, 2023
This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where 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, the electrode active material layer includes an electrode active material, a binder, and a conductive agent, the conductive agent in the electrode active material layer is unevenly distributed in a thickness direction, and based on a total weight of the electrode active material layer, a weight percentage of the conductive agent in an interior area of the electrode active material layer is higher than a weight percentage of the conductive agent in an exterior area of the electrode active material layer. 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.
Discussion in the ATmosphere