The present invention relates to an electrode assembly in which resistance is capable of being reduced.Also, when he wound electrode assembly is spread, the electrode assembly includes an electrode provided with a coating portion coated with an active material on an electrode collector and a non-coating portion, on which the active material is not applied on the electrode collector, in a longitudinal direction of the electrode collector, a tab member disposed on the non-coating portion, and a foil tab which extends from the coating portion in a width direction of the electrode collector and on which the active material is not applied.