Physical and electrochemical properties of iodine-modified activated carbons

P. Barpanda, G. Fanchini, G. G. Amatucci

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Carbon and activated carbons have been halide modified through the mechanochemical incorporation of iodine. The effect of the processing and chemical modifications on the physical and electrochemical properties was examined. Distinct evidence was obtained to support significant structural and electrochemical modification of iodine-modified carbon nanostructures vs unmodified nanostructures. The resulting materials show an interesting combination of lower surface area coupled with markedly higher volumetric and gravimetric electrochemical capacity. The incorporation of halide leads to a 200-400% increase in volumetric capacitance of carbon materials. This modification is discussed in the context of electronic modification of the carbon and the impact on non-faradaic and also pseudocapacitive reactions for use as positive electrodes in nonaqueous symmetric and asymmetric electrochemical capacitors.

Original languageEnglish (US)
Pages (from-to)A467-A476
JournalJournal of the Electrochemical Society
Volume154
Issue number5
DOIs
StatePublished - 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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