公开(公告)号：US20150243990A1

公开(公告)日：2015-08-27

申请号：US14528639

申请日：2014-10-30

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyung Yoon CHUNG ,  Won Young CHANG ,  Byung Won CHO ,  Ali GHULAM ,  Ji-Young KIM

IPC: H01M4/583 ,  H01M10/054 ,  H01M4/36

CPC classification number: H01M10/054 ,  H01M4/136 ,  H01M4/36 ,  H01M4/5825 ,  H01M4/625 ,  H01M2004/028 ,  H01M2220/20

Abstract: A cathode active material for a sodium secondary battery is provided. The cathode active material includes a FeF2.5(0.5H2O)-conductive carbon material composite and is prepared by low-temperature non-aqueous precipitation. The FeF2.5(0.5H2O)-conductive carbon material composite has high capacity and excellent cycle characteristics. In addition, the FeF2.5(0.5H2O)-conductive carbon material composite is prepared in an easy and economical manner by low-temperature non-aqueous precipitation. Therefore, the use of the FeF2.5(0.5H2O)-conductive carbon material composite ensures improved performance of the cathode active material. Further provided are a method for preparing the cathode active material and a sodium secondary battery employing the cathode active material.

Abstract translation: 提供了一种用于钠二次电池的阴极活性材料。 正极活性材料包括FeF2.5（0.5H2O）导电碳材料复合材料，并通过低温非水沉淀法制备。 FeF2.5（0.5H2O）导电碳材料复合材料具有高容量和优异的循环特性。 此外，FeF2.5（0.5H2O）导电碳材料复合材料通过低温非水性沉淀以简单经济的方式制备。 因此，使用FeF2.5（0.5H2O）导电碳材料复合物可确保改善阴极活性材料的性能。 还提供了制备阴极活性材料的方法和采用正极活性材料的钠二次电池。