The examination of ZnMnO4 in an aqueous solution of ZnCl2 and Mn(NO3)2

Abstract

This work yields in the examination of potentially cathode material for aqueous Zn-ion batters. LiMn2O4, which is used in commercial organic Li-ion batteries is replaced with ZnMn2O4 in this work. Due to the presence of Mn3+ ions, the dissolution of them occurs in electrolyte decomposing to Mn4+ and Mn2+. To overcome this issue, 1 ml of 1M Mn(NO3)2 aqueous solution was added into 10 ml of aqueous solution of ZnCl2 to achieve an equilibrium between Mn2+ ions in the material and ones in an electrolyte. The results obtained showed that a higher capacity was obtained when 1 ml of 1M Mn(NO3)2 was added into 10 ml of aqueous solution of ZnCl2.