中文摘要：

应用次氯酸盐氧化法制备出了纯度较高的K2FeO4，并通过XRD、SEM测试对其结构和形貌进行了表征．将KMnO4与K2FeO4进行机械复合制得KMnO4-K2FeO4复合电极用于改善K2FeO4-Zn碱性固态电解质电池的放电性能，电化学测试结果表明，添加量为5％时改性效果最佳，KMnO4可将放电过程中电极表面富集的Fe（Ⅲ）重新氧化为Fe（Ⅵ），可以有效的提高K2FeO4的3e转移，优化K2FeO4放电过程中的传质、传荷过程，从而提高其放电容量．

英文摘要：

K2FeO4 with high purity was synthesized using hypochlorite oxidation method. The morphology and structure of product was characterized by XRD and SEM. KMnO4- K2FeO4 mixed electrode was employed to alkaline solid-state battery to improve the discharge properties. The test results exhibit that the best ratio of KMnO4 added to K2FeO4 is 5% and Fe （Ⅲ） enriched on the surface of the electrode during discharge process can be oxidated to Fe （ Ⅵ ） again by KMnO4. The transmission of charge and reactant were optimized in the discharge process and the discharge capacity is obviously improved.