Electrode assembly and rechargeable battery having the same

摘要

The invention is directed to an electrode assembly (10,400) and a rechargeable battery (101) comprising the same. In order to improve energy density, the invention provides that an electrode (11, 410, 12, 420) comprises an inner uncoated region (1 2c, 410c) arranged at a center of the electrode assembly (10, 400) that does not comprise an active material layer (123, 423).