The inductive behavior derived from hydrolysis of polyaniline

Wei Chih Chen, Ten Chin Wen, A. Gopalan

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Electrochemical impedance spectroscopy (EIS) was used to study the impedance characteristics of polyaniline (PANI) films deposited by cyclic voltammetry with different anodic potential limits. The presence of benzoquinone (BQ) as hydrolysis product of PANI was evident for PANI films deposited with anodic potential limits ≥ 0.80 V. The data from EIS for PANI film with inbuilt BQ reveals an inductive behavior. The existence of inductive behavior for PANI film under different applied bias potentials was brought out through fitting of EIS data with equivalent circuits and deducing the value of an inductor element (L). The inductive behavior was attributed to arise due to the presence of BQ within PANI films and adequately supported by the results from X-ray photoelectron spectroscopy (XPS). The value of L reaches saturation for the PANI film synthesized with an upper potential limit of 0.90 V and measured at 0.70 V. The EIS and XPS results of the poly(N-methylaniline) (PNMA) film prepared under similar conditions corroborated with the observation that the presence of BQ within PANI results inductive characteristics to PANI

Original languageEnglish
Pages (from-to)4195-4206
Number of pages12
JournalElectrochimica Acta
Volume47
Issue number26
DOIs
Publication statusPublished - 2002 Oct 9

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

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