POSITIVE ELECTRODE PLATE, ELECTROCHEMICAL APPARATUS, AND APPARATUS

This application relates to the battery field, and specifically, to a positive electrode plate, an electrochemical apparatus, and an apparatus. The positive 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-sided thickness D2 of the conductive layer satisfies 30 nm ≤ D2 ≤ 3 µm, a thickness D1 of the support layer satisfies 1 µm ≤ D1 ≤ 30 µm, and the support layer is made of a polymer material or a polymer composite material; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, a total thickness D of the electrode active material layer is not greater than 170 µm, and a sheet resistance of the electrode active material layer ranges from 0.1 ohm to 10 ohms. The electrochemical apparatus including the positive electrode plate has high energy density, good safety performance (especially nail penetration safety performance), and good electrochemical performance.