Studies on electrosynthesized leucoemeraldine, emeraldine and pernigraniline forms of polyaniline films and their supercapacitive behavior

V. S. Jamadade, Dattatray Dhawale, C. D. Lokhande

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

In the present work, we report the supercapacitive performance of electrosynthesized leucoemeraldine (L), emeraldine (E) and pernigraniline (P) forms of polyaniline on to stainless steel (304) substrates. The properties of these forms were studied using range of techniques such as, X-ray diffraction (XRD), Fourier transforms infrared (FT-IR) and Raman spectroscopy, scanning electron microscopy (SEM), surface wettability and optical absorption. Amorphous nature of all three forms polyaniline has been revealed from XRD analysis. The formation of elemental bonds of polyaniline films have been confirmed by FT-IR and Raman spectroscopic techniques. Nanocrystalline nature for three forms and some extent of overgrowth are observed for pernigraniline (P) form. Surface wettability measurement showed hydrophobic to hydrophilic change with water contact angles 102°, 65° and 86° for leucoemeraldine (L), emeraldine (E) and pernigraniline (P) forms, respectively. Optical absorption spectra showed the presence of transition bands for emeraldine (E) and pernigraniline (P) forms. The supercapacitive behavior of these forms was studied using cyclic voltammetry and showed highest specific capacitance of 258 F g-1 for emeraldine (E) form, when compared with other forms of similar thickness.

Original languageEnglish
Pages (from-to)955-960
Number of pages6
JournalSynthetic Metals
Volume160
Issue number9-10
DOIs
Publication statusPublished - May 2010
Externally publishedYes

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Keywords

  • Emeraldine and pernigraniline forms of polyaniline
  • FT-IR
  • Leucoemeraldine
  • Optical properties
  • Raman
  • SEM
  • Supercapacitor
  • Surface wettability
  • XRD

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Condensed Matter Physics

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