Enhanced electrocapacitive performance for the supercapacitor with tube-like polyaniline and graphene oxide composites

Ting Wei Chang, Lu Yin Lin, Pei Wen Peng, Yong Xiang Zhang, Ying Yu Huang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Polyaniline (PANI) is one of the most attractive materials for pseudocapacitors. To enhance the electrolyte diffusion and improve the electrochemical performance of the electrode, the well-designed morphology of PANI is required. Incorporating carbon materials is also benefic on enhancing the cycling stability as well as the mechanical and electrochemical properties of PANI. In this study, a simple solution method is applied to synthesize the particle-deposited tube-like PANI. Due to the well-defined structure, a specific capacitance (CF) of 437.8 F/g is achieved at the current density of 4 A/g. Furthermore, the self-synthesized graphene oxide (GO) is simply mixed with the particle-deposited tube-like PANI to make a more efficient electrocapacitive material. An enhanced CF value of 475.0 F/g is achieved for the optimized PANI/GO electrode, owing to the synergic effects of the pseudo-capacitance from PANI and the functional groups of GO, as well as the electrochemical double-layered capacitance from GO. After conducting 2000 cycles repeated charge/discharge process, the CF retention of 90% and the average Coulombic efficiency of higher than 90% are also attained for the optimized PANI/GO electrode.

Original languageEnglish
Pages (from-to)348-354
Number of pages7
JournalElectrochimica Acta
Volume259
DOIs
Publication statusPublished - Jan 1 2018

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Polyaniline
Oxides
Graphene
Composite materials
Capacitance
Electrodes
Supercapacitor
polyaniline
Electrochemical properties
Functional groups
Electrolytes
Current density
Carbon
Mechanical properties

Keywords

  • Galvanostatic charge/discharge
  • Graphene oxide
  • Polyaniline
  • Supercapacitor
  • Tube-like

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Enhanced electrocapacitive performance for the supercapacitor with tube-like polyaniline and graphene oxide composites. / Chang, Ting Wei; Lin, Lu Yin; Peng, Pei Wen; Zhang, Yong Xiang; Huang, Ying Yu.

In: Electrochimica Acta, Vol. 259, 01.01.2018, p. 348-354.

Research output: Contribution to journalArticle

Chang, Ting Wei ; Lin, Lu Yin ; Peng, Pei Wen ; Zhang, Yong Xiang ; Huang, Ying Yu. / Enhanced electrocapacitive performance for the supercapacitor with tube-like polyaniline and graphene oxide composites. In: Electrochimica Acta. 2018 ; Vol. 259. pp. 348-354.
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