CNTs与钒氧化物复合纳米材料的合成及电性能研究  

Synthesis and Electrical Properties of CNTs and Vanadium Oxide Nancomposites

作　　者：陈磊[1,2] 余军[1,2] 胡阿勇[1,2] 朱泉峣[1,2] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,武汉430070 [2]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2014年第10期1-5,共5页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51472189);湖北省自然科学基金重点项目(2013CFA082)

摘　　要：介绍了一种通过溶胶凝胶结合水热法合成CNTs(碳纳米管)与钒氧化物纳米复合材料的方法。采用XRD、FESEM和TEM技术对样品的形貌和结构进行了表征。并将样品组装成扣式电池进行了电性能研究,从理论上分析了复合物电极的CD(恒流放电)和EIS性能,特别地,比较了其与VONTs(钒纳米管)和通过机械混合VONTs-CNTs复合物的DC(充放电循环)性能。结果表明,溶胶凝胶水热法合成的复合物表现出高容量、高稳定性性能,在0.1C放电倍率下,其首次放电容量达到331.3mAh/g,循环50次后,其相对第二次的保持率仍可达70.0%。Anadium oxide/carbon nanotubes（CNTs）nano-scaled composites were synthesized by a hydrothermal methode in an autoclave.The structure and morphology of the composites were characterized by XRD,FESEM and TEM,respectively.The obtained composites exhibited interpenetrating structure,where vanadium oxide and CNTs were joined each other in nano size.The electrochemical behaviors were researched by galvanostatic charge-discharge test and cyclic voltammetry,which is contrasted with vanadium oxide nanotubes（VONTs）,VONTs and CNTs composites only using simple mixed.The experimental results showed that nano-scaled vanadium oxide/CNTs composites presented a high capacity and great cycleability characteristics.The first discharge capacity was 331.3 mAh/g and the capacity retention rate reached 70.0% vs the second discharge cycle after 50 th discharge cycles.

关 键 词：CNTS 钒氧化物 复合纳米材料 电性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]