ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE INCLUDING THE SAME

The invention relates to an electrochemical device and an electronic device comprising the same. The electrochemical device comprises a positive pole piece, an isolating membrane and a negative pole piece, wherein the positive pole piece comprises a positive current collector; a first positive electrode active material layer including a first positive electrode active material; the first positive electrode active material layer comprises a first positive electrode active material, the second positive electrode active material layer comprises a second positive electrode active material, the first positive electrode active material layer is arranged between the positive electrode current collector and the second positive electrode active material layer, and the first positive electrode active material layer is arranged on a first surface, facing the negative electrode plate, of the positive electrode current collector; wherein the insulating layer is arranged on a second surface, which is not opposite to the ne