of aluminum may be electrically connected to an uncoated portion of the first electrode plate 111 the first electrode tab 117 a may protrude to one side of the pouch 130 the first electrode tab 117 a may have thereon an insulation tape formed at a portion of the first electrode tab 117 a in other implementations other materials may be used for the first electrode plate 111 and the first electrode tab 117 a the second electrode plate 112 may be formed of a metal foil e g a copper or nickel foil the second electrode plate 112 may be formed by applying a second electrode active material e g graphite or carbon on a second electrode collector a second electrode tab 117 b made of aluminum may be electrically connected to an uncoated portion of the second electrode plate 112 the second electrode tab 117 b may protrude to one side of the pouch 130 the second electrode tab 117 b may have thereon an insulation tape formed at a portion of the second electrode tab 117 b in other implementations other materials may be used for the second electrode plate 112 and the second electrode tab 117 b the separator 113 may be disposed between the first electrode plate 111 and the second electrode plate 112 to reduce the possibility of and or prevent a short circuit and to.