添加剂对高铁酸盐电极性质的影响

Effects of additives on the properties of super-iron(Ⅵ) cathode

研究了β NiOOH、γ MnO2和α BiOOH等化合物对高铁酸盐电极的影响。实验结果表明:掺杂高铁电极表现出比纯高铁电极更优越的放电性能。掺杂5%的NiOOH可使K2FeO4电极的放电电位提高150～180mV,放电容量提高19%;少量的CoOOH和BiOOH对K2FeO4电极有类似的作用;掺杂3%的MnO2可使K2FeO4电极的放电容量提高27%。掺杂5%NiOOH的BaFeO4电极的放电电位比纯BaFeO4电极提高了170mV。

The effect of several compounds (β-NiOOH,γ-MnO_2 and α-BiOOH) on super-iron(Ⅵ) cathodes was studied through the tests of galvanostatic discharge under different levels of load. The experimental results indicated that the doped Fe(Ⅵ) cathode had better discharge performance than the pure Fe (Ⅵ) cathode. The discharge potential and capacity of the K_2FeO_4 cathode were increased by 150～(180?mV) and 19% respectively by doping with 5% NiOOH. A small amount of CoOOH and BiOOH had the same effect as NiOOH on K_2FeO_4 cathode. The addition of 3% MnO_2 enhanced discharge capacity of the K_2FeO_4 cathode by 27%. The discharge potential of the BaFeO_4 cathode was increased by 170?mV with 5% NiOOH doped.