ELECTRICITY STORAGE ELEMENT

摘要

PURPOSE:To increase safety in the case of high-energy according to a heavy- current during a short circuit in an element by forming a layer having a positive temperature resistance coefficient on the surface of an electrode collector body and forming a storage electrode layer on it. CONSTITUTION:An aluminum plate 1 (positive electrode) or a copper plate 2 (negative electrode) of the equal thickness is used as an electrode collector body. A PTC paste is applied on both sides of the electrode collector body by means of a gravure printing method to provide a PTC layer 3. On the PTC layer 3, a positive electrode paste or a negative electrode paste is applied on both of its sides to provide a positive electrode active material layer 4 or a negative electrode active material layer 5. These belt electrodes and a microporous membrane separator 6 are wound into an ellipse to provide an electrode group 7.