Structure Doped Super-iron Battery Improve The Discharge And Stabillity

Potassium ferrate has regular crystal form which lead to great stability and poordischarge performance. Because of the regular tetrahedron structure of ferrate（VI）ion isinfluenced greatly when barium ion bonding in barium ferrate, the molecule arrange ofbarium ferrate is unregular, which lead to great discharge performance but poor stability.From perspective of potassium ferrate structure, the impact of doping agent onimproving discharge performance and stability of super-iron batteries is studies in this paper.In the experiment about improving discharge performance of potassium ferrate batteries,the doping agent whose structure is similar with ferrate（VI）ion is chosed for making cationdecide discharge performance and the results show that the silver ion has the best effect, anddischarge efficiency of sodium silicate and sodium iodate can reach82.91%. Then, theimpact of different ratios doping agent on discharge performance of potassium ferratebatteriesis is investigated, and the result shows that, the most optimal doping quantity ofsodium silicate is5%.The results of studying on the impact of surrounding temperature on dischargeperformance of K₂FeO₄show that,firstly, the temperature has greater influence on sodiumiodate and sodium dihydrogen phosphate, when has smaller influence on sodium silicate andsilver sulfate.And secondly, discharge performance is enhancing with the temperatureincreasing.In order to improve the stability of barium ferrate, zinc sulfate, potassium phosphate andsodium iodate whose structure is similar with ferrate（VI）ion and magnesium chloride havingtotally different structure are chosed to modify it. The results shown that, among almost80days, the purity of barium ferrate doped magnesium chloride only decreased3.07%. Then, thestudy on the impact of doping ratio on barium ferrate is made, and the results shown that1%is the most optimal ratio under different conditions. At the same time, the conclusion thatmagnesium chloride is the best doping agent can be got from kinetic analysis.