To find the suitable materials for Fe/air battery anode, in this study Fe2O3 electrodes were prepared using commercial Fe2O3 materials of Aldrich. The size and morphology of Fe2O3 materials were observed by scanning electron microscope (SEM). The electrochemical properties of the Fe2O3 electrodes in alkaline solution were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The redox reaction rate of iron was slow, resistance of Fe2O3 electrodes increased durring cycling. The effects of K2S additive in electrolyte solution on the electrochemical properties of Fe2O3 electrodes were also investigated. The obtained results show that K2S additive strongly affected on the electrochemical characteristics of Fe2O3 electrode such as improving redox reaction rate and cyclability, decreasing the electrochemical impedance of Fe2O3 electrode.
