Synergistic capacitive behavior between polyaniline and carbon black

Huanhuan Wang, Jilei Liu*, Zhen Chen, Shi Chen, Tze Chien Sum, Jianyi Lin, Ze Xiang Shen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Polyaniline (PANi) is an excellent electrode material with high pseudocapacitance for supercapacitors. Here the binder-free supercapacitor electrodes with high specific capacitance (458 F g−1 at 2 mV s−1) and Coulombic efficiency (100%) are successfully synthesized via a one-step potentialdynamic co-deposition of PANi and carbon black (CB). Significant synergistic effect between PANi and CB is demonstrated. Particularly, CB as the secondary dopant of PANi has been found to play an important role in producing higher conductivity, extended conformation structure, improved porosity, higher oxidation state and depressed hydrolysis effect, leading to superior capacitive performance. This promotes better understanding about synergistic effect between active materials and carbon additives, and opens up new research direction for high performance electrode design.

Original languageEnglish
Pages (from-to)236-244
Number of pages9
JournalElectrochimica Acta
Volume230
DOIs
Publication statusPublished - Mar 10 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Elsevier Ltd

ASJC Scopus Subject Areas

  • General Chemical Engineering
  • Electrochemistry

Keywords

  • CB
  • PANi
  • supercapacitor
  • Synergistic effect

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