COLLECTOR, ELECTRODE AND SECONDARY BATTERY HAVING THE SAME

摘要

The present invention relates to an electricity collector, an electrode including the same, and a secondary battery. The electricity collector according to the present invention includes a metal foil on which a plurality of through-holes is formed; and a joining unit which is formed of a polymer and of which both surfaces are pressed via the through-holes. The joining unit is joined to the partial surface of an electrode active material layer piled on the metal foil so that a force for joining the joining unit to the electrode active material layer can be improved. Therefore, the durability of the battery can be improved as the exfoliation of the electrode is minimized or prevented.