ELECTROCHEMICAL DEVICE AND METHOD FOR PRODUCING SAME

An electrochemical device includes a first electrode, a second electrode, a separator interposed between the first electrode and the second electrode, an electrolyte, a lead terminal electrically connected to one electrode of the first electrode and the second electrode, and a protection tape covering the lead terminal. The one electrode includes a current collecting foil and a mixture layer provided on the current collecting foil. The current collecting foil has a first region covered with the mixture layer, and a second region not covered with the mixture layer and exposing a surface of the current collecting foil. The protection tape is allowed to adhere to the lead terminal provided at the second region of the current collecting foil, and to at least a portion of a third region which is a part of the second region and not covered with the lead terminal.