无机材料学报 ›› 2017, Vol. 32 ›› Issue (2): 127-134.DOI: 10.15541/jim20160182

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磷钼酸负载碳纳米管复合物的制备及其超级电容性能

郑 譞1,2, 龚春丽1, 刘 海1, 汪广进1,2, 程 凡1, 郑根稳1, 文 胜1, 熊传溪2   

  1. (1. 湖北工程学院 化学与材料科学学院, 孝感 432000; 2. 武汉理工大学材料复合新技术国家重点实验室, 武汉 430070)
  • 收稿日期:2012-05-30 修回日期:2012-09-12 出版日期:2017-02-20 网络出版日期:2017-01-13
  • 作者简介:郑 譞(1988–), 男, 博士研究生, 实验师. E-mail:63474559@qq.com
  • 基金资助:
    国家自然科学基金青年基金(51303048, 51403058);湖北省自然科学基金(2015CFC769);中央校基本科研业务(2016-YB-011)

Preparation of Phosphomolybdic Acid Coated Carbon Nanotubes and Its Supercapacitive Properties

ZHENG Xuan1,2, GONG Chun-Li1, LIU Hai1, WANG Guang-Jin1,2, CHENG Fan1, ZHENG Gen-Wen1, WEN Sheng1, XIONG Chuan-Xi2   

  1. (1. College of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000,China; 2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070,China)
  • Received:2012-05-30 Revised:2012-09-12 Published:2017-02-20 Online:2017-01-13
  • About author:ZHENG Xuan. E-mail:63474559@qq.com
  • Supported by:
    National Natural Science Foundation--Youth Foundation (51303048, 51403058);Natural Science Foundation of Hubei Province (2015CFC769);Fundamental Research Funds for the Central Universities (2016-YB-011)

摘要:

以聚多巴胺包覆碳纳米管为载体, 借助聚多巴胺超强的粘附性, 利用简单的溶液浸渍法制备了磷钼酸负载碳纳米管(PMA@CNTs)复合物。通过傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)、透射电镜(TEM)和电化学测试等对复合物的组成、结构、形态和超级电容性能进行了表征。结果表明: 聚多巴胺可将磷钼酸均匀且牢固地负载在碳纳米管上。在0.5 mol/L的H2SO4电解液中, 复合物的最大比容量为511.7 F/g, 最大能量密度可达66.8 Wh/kg, 相应的功率密度为1000 W/kg。经过1000次循环, 比容量无任何衰减。以上研究结果说明PMA@CNTs复合物在电化学储能领域拥有极好的发展前景。

关键词: 聚多巴胺, 碳纳米管, 磷钼酸, 复合材料, 超级电容器

Abstract:

The phosphomolybdic acid coated carbon nanotubes (PMA@CNTs) were successfully fabricated by a facile polydopamine-assisted impregnation method, in which polydopamine can form an extraordinary adhesive interlayer to homogeneously adhere PMA on the surfaces of CNTs. The composition, structure, morphology and supercapacitive performances of the resulting PMA@CNTs hybrids were systematically characterized by a range of experimental tools including fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscope(XPS), scanning electron microscope(SEM), transmission electron microscope(TEM), cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD). The PMA can homogeneously loaded onto the surface of the CNTs with the aid of superior adhesion of polydopamine. Here, the performance of the resulting PMA@CNTs hybrids as supercapacitor electrodes was investigated in a three-electrode arrangement using an aqueous electrolyte (0.5 mol/L H2SO4). The supercapacitor assembled with the PMA50@CNTs hybrids exhibit the highest specific capacitances (511.7 F/g at 10 mV/s) and maximum energy density of 66.8 Wh/kg at power density of 1000 W/kg, based on the total mass of active materials. In addition, the supercapacitor also has excellent cycling stability retaining>100% of its specific capacitances after 1000 cycles at current density of 5 A/g. These results demonstrate a simple and scalable application of PMA@CNTs hybrids toward electrochemical energy storage.

Key words: polydopamine, carbon nanotubes, phosphomolybdic acid, hybrids supercapacitors

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