溶胶-凝胶法制备Li_3V_2(PO_4)_3粉体的形貌控制研究  

Research on Morphology Control of Li_3V_2(PO_4)_3 Prepared by Sol-Gel Method

作　　者：刘建科[1] 韩晨[2] 夏傲[3] 于克锐 陈永佳[2] 

机构地区：[1]陕西科技大学理学院,西安710021 [2]陕西科技大学电气与信息工程学院,西安710021 [3]陕西科技大学材料科学与工程学院,西安710021

出　　处：《人工晶体学报》2016年第2期393-397,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(11405100)

摘　　要：以LiOH·H2O,NH4VO3,H3PO4和柠檬酸为原料,十二烷基苯磺酸钠(SDBS)为表面活性剂,采用溶胶凝胶法实现了Li3V2(PO4)3粉体的制备。添加不同剂量的十二烷基苯磺酸钠(SDBS)探究其对Li3V2(PO4)3粉体物相形貌的控制作用,采用热分析、X射线衍射和场发射扫描电子显微镜对其晶型结构,形貌特征进行表征,从而研究Li3V2(PO4)3的合成温度及十二烷基苯磺酸钠(SDBS)加入量对粉体物相形貌的影响。结果表明,用溶胶凝胶法制备合成了单斜结构Li3V2(PO4)3粉体。SDBS的加入对样品的晶粒尺寸和表面形貌有一定的影响。Li3V2（ PO4）3powders were prepared by sol-gol method,using Li OH · H2 O,NH4VO3,H3PO4 and citric acid as the raw materials,and using SDBS as the surfactant. Exploring the control functions on Li3V2（ PO4）3powder ＇s phase morphology by adding different doses of SDBS. The crystal structure and morphology were characterized by thermal analysis,X-ray diffraction,and field emission scanning electron microscopy. Thus researching the synthesis temperature and the influence on powder＇s phase morphologh caused by the amount of SDBS. The results show that the Li3V2（ PO4）3powder which with structure of monoclinic was synthesized by sol-gel method. The SDBS have some influence on the grain size and surface morphology of the samples.

关 键 词：LI3V2(PO4)3 溶胶凝胶 表面活性剂 

分 类 号：TM910[电气工程—电力电子与电力传动] TQ131.11[化学工程—无机化工]