NH_4V_4O_(10)纳米带的合成、改性及其电化学性能研究  

Synthesis,modification and electrochemical performance of NH_4V_4O_(10) nanobelts

作　　者：王念[1] 周超[1] 李力[1] 孙玉恒[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《功能材料》2015年第6期6049-6052,共4页Journal of Functional Materials

基　　金：重庆市教育委员会科学技术研究资助项目(KJ130406)

摘　　要：以偏钒酸铵为前驱体,采用水热法合成了纯净的单晶NH4V4O10纳米带,同时在水热合成过程中添加氧化石墨烯对其进行了掺杂改性研究。通过XRD、TEM、HRTEM和循环伏安法等测试手段对产物的结构和电化学性能进行了表征和测试。研究发现,生长溶液的p H值决定着NH4V4O10纳米晶体的结构与形貌。由于氧化石墨烯在水热条件下被还原,相对于未添加氧化石墨烯的NH4V4O10纳米带,添加氧化石墨烯掺杂改性的NH4V4O10纳米带的导电能力显著提高。很明显,采用氧化石墨烯掺杂的方法有利于改善NH4V4O10纳米带的电化学性能。Single-crystalline and pure NH4V4O10 nanobelts were successfully synthesized by a simple hydrothermal method. Based on these techniques,one-dimensional NH4V4O10 nanobelts also were synthesized by adding about 3% mol graphene oxide. The resulting products were tetragonal zircon-type structure and characterized using XRD,SEM,TEM,HRTEM and Cyclic Voltammetry. Because of being reduced of graphene oxide during the hydrothermal reaction,the conductive capability of the NH4V4O10 nanobelts doping the graphene oxide was improved obviously than the pure NH4V4O10 nanobelts. It was concluded that the electrochemical performance of NH4V4O10 nanobelts can be improved by doping the graphene oxide.

关 键 词：NH4V4O10纳米带 PH值 氧化石墨烯 电化学性能 

分 类 号：TB34[一般工业技术—材料科学与工程]