Sejong University

Jae Hyeon Jo

Seung Taek Myung

Hee Jae Kim

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 stacked. 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.

Electrode material for zinc secondary batteries

Disclosed is a zinc ion secondary battery including an aqueous electrolyte. More particularly, the zinc ion secondary battery includes a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an aqueous electrolyte disposed between the positive electrode and the negative electrode and containing an aqueous solvent and a metal salt, wherein the metal salt has a composition represented by Formula 1 below:A-Zn.M&#x2003;&#x2003;[Formula 1]

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Seoul, South Korea

Jae Hyeon Jo