| For resolving the problem of discharge properties of contemporary alkaline MnO2/Zn battery at high current densities and suiting to the demand of high power and capacity of moving electrical equipments, we developed a new type of super-iron Zn battery composed of Fe(Ⅵ) cathode. In this paper, we studied ferrate chemical synthesis, electrochemical production, charge-discharge properties and the impact of additives on the electrochemical characteristics of Fe(Ⅵ) cathode .The technology method of chemical preparation of ferrate was studied and improved. Fresh Fe(OH)3 was adopted as iron sources rather than traditional iron(Ⅲ) salts to synthesize ferrate salts. The experiment results indicated that high purity ferrate was obtained by using this method. We discussed the influence of current density, electrolyte composition and concentration, temperature, electrolysis time, anode material, anode activated assistant and membrane material on current yield during ferrate electrochemical production. So we got the optimal electrolysis conditions for ferrate electrolysis preparation.The C-rate performance of Fe(Ⅵ) cathode was studied by constant current discharge and super-iron Zn battery was developed. It was demonstrated that super-iron Zn battery had superior properties by testing of its charge-discharge capacity at different load and temperature. In this study, we introduced a new discharge mechanism of Fe(Ⅵ) cathode as " solid and liquid soluble balance process " for the first time.In this paper, we demonstrated that several additives such asβ-NiOOH andγ-MnO2 could significantly impact the electrochemical characteristics of Fe(Ⅵ) cathode. To explain this effect, we posed a reaction mechanism for these additives as electrocatalyst.
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