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Hybrid supercapacitor based on polyaniline doped with lithium salt and activated carbon electrodes

  • Jing Fang (方静)
  • Mu Cui (崔沐)
  • Hai Lu (卢海)
  • Zhi-an Zhang (张治安)Email author
  • Yan-qing Lai (赖延清)
  • Jie Li (李劼)
Article

Abstract

Polyaniline(PANI) nanofiber was synthesized by interfacial polymerization utilizing the interface between HCl and CCl4. The hybrid type supercapacitors (PLi/C) based on Li-doping polyaniline and activated carbon electrode were fabricated and compared with the redox type capacitors (PLi/PLi) based on two uniformly Li-doping polyaniline electrodes. The electrochemical performances of the two types of supercapacitors were characterized in non-aqueous electrolyte. PLi/C supercapacitors have a wider effective energy storage potential range and a higher upper potential. At the same time, the PLi/C supercapacitor exhibits a specific capacity of 120.93 F/g at initial discharge and retains 80% after 500 cycles. The ohmic internal resistance (RES) of PLi/C supercapacitor is 5.0 Ω, which is smaller than that of PLi/PLi capacitor (5.5 Ω). Moreover, it can be seen that Et4NBF4 organic solution is more suitable for using as organic electrolyte of PLi/C capacitor compared with organic solution containing LiPF6.

Key words

polyaniline Li salt hybrid supercapacitor conducting polymer doping 

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Copyright information

© Central South University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  • Jing Fang (方静)
    • 1
  • Mu Cui (崔沐)
    • 1
  • Hai Lu (卢海)
    • 1
  • Zhi-an Zhang (张治安)
    • 1
    Email author
  • Yan-qing Lai (赖延清)
    • 1
  • Jie Li (李劼)
    • 1
  1. 1.School of Metallurgical Science and EngineeringCentral South UniversityChangshaChina

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