有序多孔球花状MoO_3的制备及超级电容性能  

Preparation and Supercapacitance Performance of Ordered Porous Sphere Flower-like MoO_3

作　　者：游鑫标 汪山 李晨琦 顾文秀 滕跃[2] 宋启军 YOU Xinbiao;WANG Shan;LI Chenqi;GU Wenxiu;TENG Yue;SONG Qijun(School of Chemical & Material Engineering, Jiangnan University, Wuxi 214122, China;School of Environment and Civil Engineering, Jiangnan University, Wuxi 214122, China)

机构地区：[1]江南大学化学与材料工程学院,江苏无锡214122 [2]江南大学环境与土木工程学院,江苏无锡214122

出　　处：《化工技术与开发》2019年第3期1-3,19,共4页Technology & Development of Chemical Industry

基　　金：国家自然科学基金项目(21307043)

摘　　要：通过天然高分子介导的水热法和高温退火活化,两步简便制备了有序多孔球花状MoO_3。采用场发射扫描电子显微镜(FESEM)和X射线衍射(XRD)技术,对材料的形貌、组成和结构进行了表征。循环伏安、恒电流充放电和循环寿命测试的实验结果表明,该材料具有良好的超级电容性能,在1A·g^(-1)的大电流密度下,首次放电质量比电容可达240 F·g^(-1)。当测试电流密度为5A·g^(-1)时,充放电循环2000次后的质量比电容的保持率仍可达81%,表现出优良的循环稳定性。The ordered porous sphere flower-like MoO3 was facilely prepared by biopolymer-mediated hydrothermal method followed by high temperature annealing activation. The morphology, composition and structure of the materials were characterized by field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD) techniques. Cyclic voltammetry, constant current charge and discharge and cycle stability test results showed that the as-prepared material had good supercapacitor performance, and the first discharge mass ratio capacitance could reach 240 F/g at a large current density of 1 A/g. When the test current density was 5 A/g, the mass specific capacitance retention rate after the charge-discharge cycle of 2000 times was still 81%, showed excellent cycle stability.

关 键 词：纳米材料 MOO3 超级电容器 晶体生长 

分 类 号：TQ136.12[化学工程—无机化工]