碳纳米管/五氧化二钒空心球的制备及其电化学性能研究

doi:10.13208/j.electrochem.141044

电化学（中英文） ›› 2015, Vol. 21 ›› Issue (2): 152-156. doi: 10.13208/j.electrochem.141044

• 化学电源及其材料近期研究专辑（客座编辑：复旦大学夏永姚教授） • 上一篇下一篇

碳纳米管/五氧化二钒空心球的制备及其电化学性能研究

郝亮，申来法，王婕，朱佳佳，赵笑晨，张校刚^*

南京航空航天大学材料科学与技术学院，江苏省能量转换材料与技术重点实验室，江苏南京 210016

收稿日期:2014-10-31 修回日期:2014-12-22 出版日期:2015-04-28 发布日期:2015-01-05
通讯作者: 张校刚 E-mail:azhangxg@163.com
基金资助:
国家自然科学基金项目（No. 21173120，No. 51372116）、国家重点基础研究发展计划（No. 2014CB239701）及江苏省自然科学基金项目（No. BK2011030）资助

Synthesis and Electrochemical Properties of CNTs/V₂O₅ Hollow Microspheres

HAO Liang, SHEN Lai-fa, WANG Jie, ZHU Jia-jia, ZHAO Xiao-chen, ZHANG Xiao-gang^*

Jiangsu Key Laboratory of Materials and Technology for Energy Conversion, College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2014-10-31 Revised:2014-12-22 Published:2015-04-28 Online:2015-01-05
Contact: ZHANG Xiao-gang E-mail:azhangxg@163.com

摘要/Abstract

摘要： 采用溶剂热法制备了碳纳米管穿插的分级结构五氧化二钒空心球（VOC_x）. 使用XRD、SEM、循环伏安曲线和充放电曲线研究了不同碳纳米管量对产物结构、形貌和电化学性能的影响. 结果表明，碳纳米管的加入明显改善了VOC的倍率特性. 碳纳米管含量为7.1%时，0.5 A·g^-1电流密度下，其比电容达到346 F·g^-1，8 A·g^-1电流密度时，其电容保持率可达75%. 与活性炭组装成混合电容器，在功率密度为700 W·kg^-1时，能量密度达12.6 Wh·kg^-1.

关键词: 溶剂热法, 五氧化二钒, 碳纳米管, 混合电容器

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.

Key words: solvothermal process, V₂O₅, CNTs, hybrid capacitor

中图分类号:

O646

郝亮，申来法，王婕，朱佳佳，赵笑晨，张校刚*. 碳纳米管/五氧化二钒空心球的制备及其电化学性能研究[J]. 电化学（中英文）, 2015, 21(2): 152-156.

HAO Liang, SHEN Lai-fa, WANG Jie, ZHU Jia-jia, ZHAO Xiao-chen, ZHANG Xiao-gang*. Synthesis and Electrochemical Properties of CNTs/V₂O₅ Hollow Microspheres[J]. Journal of Electrochemistry, 2015, 21(2): 152-156.

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https://electrochem.xmu.edu.cn/CN/Y2015/V21/I2/152

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碳纳米管/五氧化二钒空心球的制备及其电化学性能研究

Synthesis and Electrochemical Properties of CNTs/V₂O₅ Hollow Microspheres

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碳纳米管/五氧化二钒空心球的制备及其电化学性能研究

Synthesis and Electrochemical Properties of CNTs/V2O5 Hollow Microspheres

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Synthesis and Electrochemical Properties of CNTs/V₂O₅ Hollow Microspheres