SOUS-COUCHE POUR DISPOSITIF DE STOCKAGE D'ÉNERGIE, ET FEUILLE DE SOUS-COUCHE POUR ÉLECTRODE DE DISPOSITIF DE STOCKAGE D'ÉNERGIE

摘要

This undercoat layer for an energy storage device has a thickness of 1-200 nm. An undercoat foil provided with the undercoat layer is capable of being ultrasonically welded efficiently. An energy storage device exhibiting low resistance can be obtained by using an electrode provided with the undercoat foil.