ELECTROCHEMICAL DEVICE AND ELECTRONIC DEVICE

An electrochemical device includes a first electrode plate. The first electrode plate includes a current collector and an active material layer. The current collector includes a first substrate and a second substrate that are stacked together. The second substrate is disposed between the first substrate and the active material layer. And MPa≤Rm−Rm≤400 MPa, Rmis a tensile strength of the first substrate and Rmis a tensile strength of the second substrate. The current collector that includes the first substrate and the second substrate is adopted, thereby suppressing both the elongation deformation of the electrode plate and the detachment of the active material layer.