ELECTRODE MATERIAL FOR ZINC SECONDARY BATTERIES

Disclosed is a zinc ion secondary battery. More particularly, the zinc ion secondary battery includes a first electrode; a second electrode; and an electrolyte disposed between the first electrode and the second electrode, wherein an active material included in the first electrode is an alkali metal-vanadium oxide/graphene oxide composite, wherein the alkali metal-vanadium oxide has a layered structure in which alkali metal layers and vanadium oxide layers are alternately laminated. Accordingly, a zinc ion battery system including the KVO/a graphene oxide composite as an electrode active material can exhibit excellent rechargeability and have a high discharge capacity and an excellent capacity retention rate.