ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE THAT APPLIES SAME

An electrochemical device includes an electrolytic solution, an electrode assembly, and a housing accommodating the electrolytic solution and the electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator disposed there between, which are stacked and wound. In a direction of a winding central axis, the electrochemical device includes a first end and a second end that are opposite to each other. The first electrode plate includes a first current collector and a first active material layer disposed on the first current collector. The first current collector includes a first part. In the direction of the winding central axis, the first part is located at an end of the first current collector and is closer to the first end than the second end. A porous layer is disposed on the first part.