二硫化钼花状微球的水热合成及其微观结构表征  

Hydrothermal Synthesis and Characterization of Flower-like MoS_2 Microspheres

作　　者：白利忠[1] 李方[1] 高玉伟[1] 安东[1] 张志毅[1] 刘亚青[1] 

机构地区：[1]中北大学材料科学与工程学院,太原030051

出　　处：《材料导报（纳米与新材料专辑）》2016年第2期202-205,共4页

基　　金：国家自然科学基金(50672004)

摘　　要：以钼酸铵作为钼源,硫脲作为硫源和还原剂,采用简便的水热法合成二硫化钼花状微球。采用X射线衍射仪、拉曼光谱仪、扫描电子显微镜和透射电子显微镜对二硫化钼样品的形貌和结构进行表征。考察了钼硫比、反应时间、反应温度对二硫化钼花状微球形貌和结构的影响。结果表明,当钼硫物质的量比为1∶2.25,反应温度为220℃,反应时间为18h时合成了结晶性好的纳米片(厚度为10nm)组装而成的二硫化钼花状微球,其具有较大的比表面积,是一种性能优异的锂离子电池电极材料。Flower-like MoS2 microspheres have been successfully synthesized by a tacile hydrothermal method using ammonium molybdate as molybdenum source, thiourea as sulfur source and reducing agent. The morphology and structure of the samples were characterized by X-ray diffraction, Raman spectrum, scanning electron microscope and transmission electron microscopy. The effects of molybdenum sulfur ratio, reaction time and reaction temperature on the morphology and structure of flower-like MoS2 microspheres were investigated. It is revealed that flower-like MoS2 microspheres assembled by good crystalline nanosheets （with thickness of 10 nm） were successfully synthesized when molybdenum sulfur ratio was 1 ： 2.25, the reaction temperature was 220℃ and the reaction time was 18 h. The unique structure of flower-like MoS2 microspheres made it become the most promising cathode material for lithium ion batteries.

关 键 词：二硫化铝 花状微球 水热合成 

分 类 号：TM912.9[电气工程—电力电子与电力传动]