Positive pole piece, secondary battery and electric device

The invention relates to the technical field of batteries, and discloses a positive pole piece, a secondary battery and an electric device, the positive pole piece comprises a positive current collector, the positive current collector is provided with a straight section and a bent section which are used for forming a winding type electrode assembly, the surface of the straight section is coated with a first positive active material layer, and the surface of the bent section is coated with a second positive active material layer; the surface of the bent section is coated with a second positive electrode active material layer, the second positive electrode active material layer and the first positive electrode active material layer are both located on the same side of the positive electrode current collector, and the thickness of the first positive electrode active material layer is equal to that of the second positive electrode active material layer on the same side of the positive electrode current collector;