Preparation method and application of niobium diselenide as electrode material of sodium-ion battery

The invention discloses a reparation method and application of niobium diselenide as an electrode material of a sodium-ion battery. The method comprises the steps that a selenium source and a niobiumsource are uniformly mixed and sintered at the specific temperature under a non-oxidizing atmosphere or in vacuum, and after natural cooling, the pure-phase niobium diselenide material is prepared. The material has the advantages of low investment, simple preparation technology processes and devices, convenient operation, high product purity, good safety performance and the like. When applied to the electrode material of the sodium-ion battery, the prepared niobium diselenide material is excellent in cycling stability performance and rate capability. 本发明公开了一种钠离子电池电极材料二硒化铌的制备方法和应用，所述方法包括将硒源和铌源混合均匀，于非氧化性气氛或真空中，在特定温度下进行烧结，自然冷却后制得纯相二硒化铌材料。本发明材料有投资少、制备工艺流程及设备简单、操作方便、产品纯度高及安全性能好等特点。在本发明制备得到的二硒化铌材料应用于钠离子电池电极材料时，具有优异的循环稳定性能和出色的倍率性能。