Electrochemical codeposition of nickel oxide and polyaniline

Xu Yuan Peng, Xiao Xia Liu*, Pei Jie Hua, Dermot Diamond, King Tong Lau

*Corresponding author for this work

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27 Citations (Scopus)


Nickel oxide (NiO x) and polyaniline (PAni) were electrocodeposited from NiSO 4 and aniline through cyclic voltammetric scans to afford PAni-NiO x composite film at controlled pH environment. The electrochemical activities of the film were investigated by cyclic voltammetry in 0.1 M NaOH and 0.1 M H 2SO 4, respectively. Typical redox couples of PAni in 0.1 M H 2SO 4 appeared at approximately 0.2 and 0.4 V vs. saturated calomel electrode (SCE); Ni(II)/Ni(III) redox couple was observed at approximately 0.4 V vs. SCE in 0.1 M NaOH. The morphologies and elemental components of the films were inspected by scanning electron microscopy and energy dispersive X-ray diffraction. The stability of nickel oxide in the films was found to be enhanced against acidic environments. Electrochemical catalytic behavior of NiO x within the composite film was conserved and demonstrated by catalytic oxidation of methanol and ethanol.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Solid State Electrochemistry
Issue number1
Publication statusPublished - Jan 2010
Externally publishedYes


  • Composite film
  • Electrocatalysis
  • Nickel oxide
  • Polyaniline

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