Studies on the electrochemical characteristics of K2Sr(FeO4)2 electrode

K2Sr(FeO4)(2) was prepared from K2FeO4 and characterized by SEM. XRD, IR and AAS. The measured solubility of K2Sr(FeO4)(2) is lower than that of K2FeO4 either in various concentrations of aqueous potassium hydroxide at room temperature (25degreesC) or in saturated KOH solution at different temperatures. Discharge performance of K2Sr(FeO4)(2) electrode under different conditions was studied by the constant current discharge method. The discharge efficiency of K2Sr(FeO4)(2) electrode is higher than that of K2FeO4 electrode at the same discharge condition. The electrochemical characteristics of K2Sr(FeO4)(2) electrode were also investigated by means of electrochemical impedance spectroscopy (EIS). (C) 2002 Elsevier Science B.V. All rights reserved.