ELECTRODE ASSEMBLY AND SECONDARY BATTERY USING THE SAME

摘要

PURPOSE: An electrode assembly is provided to easily ion-exchange between a positive electrode plate and a negative electrode plate by supplying enough electrolyte to a whole part of an electrode plate, thereby capable of improving a performance of a secondary battery. CONSTITUTION: An electrode assembly accepted in the battery case together with electrolyte comprises an electrode plate(110) in which an unevenness part is formed in order to flow the electrolyte from outside to inside on a surface coated with active material; and a separator inserted between the electrode plates. On both surfaces of the electrode plate, the unevenness part is formed. The unevenness part of the electrode plate is formed by rolling process. The rolling process is conducted by using one or more rollers with a protrusion.