Abstract
The carbon nanotubes/vanadium oxides (CNTs/V2O5) hollow microspheres (VOC) were prepared via solvothermal process. The effects of the ratio for CNTs to V2O5 on the morphologies, structures and electrochemical performances were systemically investigated. The results indicate that CNTs dramatically enhanced the rate performances of VOC composite electrodes. When the ratio of CNTs is 7.1%, the VOC composite electrode exhibited the best electrochemical performance, which delivered a specific capacitance of 346 F·g-1 at 0.5 A·g-1 and maintained 75% at 8 A·g-1 in 5 mol L-1 LiNO3. A hybrid capacitor was assembly using commercial activated carbon as the negative electrode and VOC as the positive electrode. The hybrid capacitor exhibited an energy density of 12.6 Wh·kg-1 and power density of 700 W·kg-1.
Graphical Abstract
Keywords
solvothermal process, V2O5, CNTs, hybrid capacitor
Publication Date
2015-04-28
Online Available Date
2015-01-05
Revised Date
2014-12-22
Received Date
2014-10-31
Recommended Citation
Liang HAO, Lai-fa SHEN, Jie WANG, Jia-jia ZHU, Xiao-chen ZHAO, Xiao-gang ZHANG.
Synthesis and Electrochemical Properties of CNTs/V2O5 Hollow Microspheres[J]. Journal of Electrochemistry,
2015
,
21(2): 152-156.
DOI: 10.13208/j.electrochem.141044
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol21/iss2/7
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