A secondary battery having an improved current-collecting structure is provided. In an example embodiment, the secondary battery includes an electrode assembly including a plurality of unit electrode plates each including a pair of non-coating portion tabs at a first side and a plurality of separators each located between the unit electrode plates; and a current collector plate welded to the non-coating portion tabs, and the current collector plate is welded in a state in which the pair of non-coating portion tabs are bent in opposite directions. The pair of non-coating portion tabs are bent in opposite directions to then be welded to the current collector plate, and welding may be complementarily performed, thereby securing electrical stability.