Ultrasonic exfoliation of carbon fiber: electroanalytical perspectives

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Abstract

Abstract: Electrochemical anodisation techniques are regularly used to modify carbon fiber surfaces as a means of improving electrochemical performance. A detailed study of the effects of oxidation (+ 2 V) in alkaline media has been conducted and Raman, XPS and SEM analyses of the modification process have been tallied with the resulting electrochemical properties. The co-application of ultrasound during the oxidative process has also been investigated to determine if the cavitational and mass transport features influence both the physical and chemical nature of the resulting fibers. Marked discrepancies between anodisation with and without ultrasound is evident in the C1s spectra with variations in the relative proportions of the electrogenerated carbon-oxygen functionalities. Mechanisms that could account for the variation in surface species are considered. Graphic abstract: [Figure not available: see fulltext.].

Original languageEnglish
Pages (from-to)383-394
Number of pages12
JournalJournal of Applied Electrochemistry
Volume50
Early online date30 Jan 2020
DOIs
Publication statusPublished - 31 Mar 2020

Keywords

  • Anodisation
  • Carbon fiber
  • Electrode
  • Surface treatment
  • Ultrasound
  • XPS

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