LITHIUM SECONDARY BATTERY COMPRISING CURRENT COLLECTOR HAVING GRAPHENE COATING LAYER

摘要

The present invention relates to a lithium secondary battery in which a positive electrode and a negative electrode are stacked with a separation film interposed therebetween. The lithium secondary battery includes current collectors comprising: one or more positive electrode current collectors in which a positive electrode active material is applied; and one or more negative electrode current collectors in which a negative electrode active material is applied. At least one of the current collectors has an active material formed on one surface or both surfaces thereof and a graphene coating layer on an interface.