An electrode assembly and a secondary battery including the same, the electrode assembly including a plurality of first polar plates, each first polar plate including a first coating portion coated with a first active material, and a bent first non-coated portion; a plurality of second polar plates, each second polar plate including a second coating portion coated as a second active material, and a bent second non-coated portion; and a plurality of separators between the first polar plates and the second polar plates.