ELECTRODE FOR ELECTROCHEMICAL ELMENT, PROCESS FOR PRODUCING THE ELECTRODE, AND ELECTROCHEMICAL ELEMENT USING THE ELECTRODE

摘要

This invention provides an electrode for an elctrochemical element, which a current collector having a concave part and a convex part on its at least one side, and a columnar body provided on the convex part of the current collector. The columnar body comprises an active material which occludes and releases lithium ions capable of bonding to at least oxygen, and the content of oxygen in the active material in the columnar body decreases as the distance from the interface of the current collector increases.