广西师范大学学报（自然科学版） ›› 2017, Vol. 35 ›› Issue (4): 84-90.doi: 10.16088/j.issn.1001-6600.2017.04.012

• • 上一篇    下一篇

中间相炭微球改性聚苯胺超级电容器电极材料研究

曾建强1,2,3,何明基1,2,3,李庆余1,2,3,黄寒星1,2,3,丁雪雪1,2,3,毛全元1,2,3,钟新仙1,2,3*   

  1. 1. 广西师范大学化学与药学学院,广西桂林541004;
    2. 省部共建药用资源化学与药物分子工程国家重点实验室,广西桂林541004;
    3. 广西低碳能源材料重点实验室,广西桂林541004
  • 出版日期:2017-07-25 发布日期:2018-07-25
  • 通讯作者: 钟新仙(1973—),女,湖南新邵人,广西师范大学教授,博士。E-mail: zhongxx2004@163.com
  • 基金资助:
    中国博士后科学基金(2014M562499XB);国家自然科学基金(U1401246, 51474110)

Polyaniline Electrode Materials Modified by MesocarbonMicrobead for Supercapacitor

ZENG Jianqiang1,2,3, HE Mingji1,2,3, LI Qingyu1,2,3, HUANG Hanxing1,2,3,DING Xuexue1,2,3, MAO Quanyuan1,2,3, ZHONG Xinxian1,2,3*   

  1. 1. School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin Guangxi 541004, China;
    2.State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guilin Guangxi 541004,China;
    3. Guangxi Key Laboratory of Low Carbon Energy Materials, Guilin Guangxi 541004, China
  • Online:2017-07-25 Published:2018-07-25

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摘要： 本文以活性中间相炭微球为基底,过硫酸铵(APS)为氧化剂,通过原位化学聚合法聚合苯胺,得到聚苯胺/活性中间相炭微球复合材料(PANI/A-MCMB),采用扫描电子显微镜(SEM)、X-射线衍射仪(XRD)对其形貌和结构进行表征。以PANI/A-MCMB复合物为电极活性物质,1.0 mol/L H2SO4水溶液为电解液,组装对称型超级电容器,用循环伏安法(CV)、电化学交流阻抗(EIS)、恒流充放电(GCD)等测试手段测试超级电容器的电化学性能。实验结果表明,电流密度恒为0.1 A/g时,PANI/A-MCMB复合材料单电极比容量为301.6 F/g,1 000次循环后比容量为276.3 F/g,比电容保持率为91.6%,较PANI材料(比容量为228 F/g,1 000次循环后比电容保持率为39.5%)具有更好的比容量和循环稳定性。

关键词: 聚苯胺, 中间相炭微球, 原位化学聚合法, 超级电容器

Abstract: In this paper, polyaniline/activated mesocarbon microbeads (PANI/A-MCMB) composite material was obtained through in-situ chemical polymerization of aniline by using activated mesocarbon microbeads (MCMB) as substrate and ammonium peroxydisulfate (APS) as oxidizing agent. The morphology and structure of prepared PANI/A-MCMB composite material was characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). A symmetric redox supercapacitor was assembled with PANI/A-MCMB composite as active electrode material and 1.0 mol/L H2SO4 aqueous solution as electrolyte, and the electrochemical properties of this PANI/A-MCMB supercapacitor were investigated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/ discharge tests. The experimental results show that the single specific capacitance of PANI/A-MCMB composite materials is 301.6 F/g at current density for 0.1 A/g, the specific capacitance is 276.3 F/g and the capacity retention is 91.6 % after 1 000 charge/discharge cycles. PANI/A-MCMB composite materials have higher specific capacity and better cyclic stability than PANI electrode materials whose single specific capacitance of PANI is only 228 F/g and the capacity retention is 39.5% after 1 000 charge/discharge cycles.

Key words: polyaniline, mesocarbon microbeads, in-situ chemical polymerization, supercapacitor

中图分类号: 

  • TQ050. 425
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