Electrode Assembly And Secondary Battery Comprising Same

Abstract: Provided are an electrode assembly, a secondary battery comprising same, and an energy storage device, the electrode assembly comprising: a mono cell group including one or more mono cells; an end surface electrode stacked on one or more sides among the upper and lower outermost sides of the mono cell group; and a separator interposed between the mono cell group and the end surface electrode, wherein the end surface electrode includes a current collector and an electrode layer on only one side surface of the current collector, a porosity of the electrode layer is 30% or less, and a curl of the end surface electrode is 30 mm or less.

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