The Preparations Of Ferrates And Their Applications

Iron, an abundant element in nature, typically occurs in the valence states of Fe (0), Fe (â…¡) and Fe (â…¢). Due to their high oxidation, multiple electron transfer, and high intrinsic energy, we refer to the cells containing Fe (â…¥) compounds as"super-iron"batteries with more energy capacity compared to conventional alkaline batteries. The three charge reduction of Fe (â…¥) represents a high energy and capacity source of cathodes, and the ferric oxide have been considered as an environmentally benign substance.For resolving the problem of discharge of contemporary alkaline battery at high current densities and suiting to the demand of high power and capacity of electrical equipments, we developed a new type of super-iron battery composed of Fe (â…¥) cathode. We fund a new technology method for resolving the problem of recycle using the solution of K2FeO4 for the first time. Studied ferrate chemical synthesis, electrochemical production, discharge properties, the impact of additives on the electrochemical characteristics of Fe (â…¥) cathode and the standard of how to choice a useful additive.In order to synthesize K2FeO4 and BaFeO4 effectively, in this paper we prepared K2FeO4 through oxidation of KClO and Fe(NO3)3 i 9H2O, and subsequently prepared BaFeO4 by reaction of K2FeO4 and Ba(CH3COO)2 and studied the effect of reaction temperature, reaction duration, the molar ratio of KClO to Fe(NO3)3i9H2O, the different iron material, times of filtration and so forth on the productivity and purity of K2FeO4. The microstructure of K2FeO4 and BaFeO4 was measured by IR,XRD,SEM,TG and DSC. Also, the...