NiSe_2的合成制备及其电化学性能

Synthesis of NiSe_2 and Its Electrochemical Properties

采用溶剂热法在一缩二乙二醇(C_4H_(10)O_3)中一步合成二硒化镍纳米材料,反应中添加十六烷基三甲基溴化铵(CTAB)和聚乙烯吡咯烷酮(PVP)为表面活性剂.利用X射线衍射仪(XRD)、场发射扫描电子显微镜(FESEM)、能谱仪(EDS)和拉曼光谱对产物进行了表征,利用电化学工作站对其电化学性能进行测试.结果表明,形貌规则的多面体和树枝状的产物被成功合成制备.通过控制镍硒比(n(Ni)∶n(Se))、反应时间和反应温度以合成不同形貌的二硒化镍.

NiSe2 nanomaterials were successfully synthesized via a simple mild solvothermal method by using cetyltrimethyl ammonium bromide（CTAB） and polyvinyl pyrrolidone（PVP） as the surfactants.In the process,diethylene glycol（DEG） was used as solvent,NiCl2·6H2O as Ni source and SeO2 as Se source.The structure and morphology of the products were characterized by an X-ray diffractomer（XRD）,field emission scanning electron microcopy（FESEM）,energy disperse spectroscopy（EDS） and Raman spectroscopy.Their electrochemical performance was tested by electrochemical workstation.The results indicated that uniform polyhedron and dendritic products were successfully synthesized.The influences of the mole ratio of NiCl2·6H2O to SeO2,and reactive time and temperature on the size and morphology of NiSe2 were investigated.