Characterization and enhancement in conductivity and conductivity stability of electropolymerized polypyrrole/Al2O3 nanocomposites

Yu Chuan Liu, Chenh Jung Tsai

Research output: Contribution to journalArticle

31 Citations (Scopus)


In this study, a nanocomposite of 80 nm α-Al2O3-incorporated polypyrrole (PPy) film was electropolymerized on a Au substrate. It was found that the nucleation and growth were instantaneous three-dimensional processes before and after nuclei overlapping for pure PPy electropolymerization. However, a distinguishable nucleation and growth mechanism before nuclei overlapping was shown for the preparation of the nanocomposite. The nanocomposite demonstrates an extremely high oxidation level revealed from the analyses of X-ray photoelectron spectroscopy (XPS) and surface-enhanced Raman scattering (SERS). Also the conductivity of the nanocomposite was increased substantially (∼5.4 times) and it can depress aging in a 50% relative humidity, 20% (v/v) O2 and 30°C atmosphere for 60 days, in comparison to pure PPy.

Original languageEnglish
Pages (from-to)165-171
Number of pages7
JournalJournal of Electroanalytical Chemistry
Issue number1-2
Publication statusPublished - Nov 29 2002
Externally publishedYes



  • Conducting polymer
  • Conductivity
  • Electropolymerization
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

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