ELECTRODE, ELECTRODE ELEMENT, ELECTROCHEMICAL ELEMENT, AND POWER STORAGE DEVICE

To provide a separator-integrated electrode capable of preventing a short circuit with a counter electrode at the end of the electrode without deteriorating battery performance.SOLUTION: An electrode includes an electrode base, an electrode mixture material layer provided on the electrode base, and an insulating layer provided on one surface of the electrode mixture layer, and the insulating layer includes a first region including a first thick layer having a first thickness in a direction perpendicular to the one surface, and a second region including a second thick layer having a second thickness in a direction perpendicular to the first thick layer and the one surface, and the second region is at least a part of a peripheral edge of the one surface.SELECTED DRAWING: Figure 1 【課題】電池性能を低下させることなく、電極端部で対向電極との短絡を防ぐことが可能なセパレータ一体型電極を提供する。【解決手段】電極基体と、前記電極基体上に設けられた電極合材層と、前記電極合材層の一方の面上に設けられた絶縁層と、を備え、前記絶縁層は、前記一方の面と垂直な方向に第１の厚みを有する第１の膜厚層を含む第１領域と、前記第１の膜厚層および前記一方の面と垂直な方向に第２の厚みを有する第２の膜厚層とを含む第２領域を有し、前記第２領域は、前記一方の面の周縁部の少なくとも一部であることを特徴とする、電極。【選択図】図１