Patent ID: 8568929

Claim:
An electrode assembly for a rechargeable battery, the electrode assembly comprising: a first electrode; a second electrode; a first separator between the first electrode and the second electrode, the first separator having a plurality of first pores, each of the first pores elongated in a first direction; and a second separator on an opposite side of the first electrode from the first separator, the second separator having a plurality of second pores, each of the second pores elongated in a second direction crossing the first direction, wherein first pores of the plurality of first pores overlap second pores of the plurality of second pores at overlapping regions, and wherein the first pores and the second pores have non-overlapping regions that do not overlap with each other, and wherein first pores of the plurality of first pores have lengths in the first direction greater than widths in a direction substantially perpendicular to the first direction, and second pores of the plurality of second pores have lengths in the second direction greater than widths in a direction substantially perpendicular to the second direction.