Direct electro-deposition of graphene from aqueous suspensions

Matthias Hilder, Bjorn Winther Jensen, Dan Li, Maria Forsyth, Douglas R. MacFarlane

Research output: Contribution to journalArticle

140 Citations (Scopus)

Abstract

We describe the direct electro-chemical reduction of graphene oxide to graphene from aqueous suspension by applying reduction voltages exceeding -1.0 to -1.2 V. The conductivity of the deposition medium is of crucial importance and only values between 4-25 mS cm-1 result in deposition. Above 25 mS cm-1 the suspension de-stabilises while conductivities below 4 mS cm-1 do not show a measurable deposition rate. Furthermore, we show that deposition can be carried out over a wide pH region ranging from 1.5 to 12.5. The electro-deposition process is characterised in terms of electro-chemical methods including cyclic voltammetry, quartz crystal microbalance, impedance spectroscopy, constant amperometry and potentiometric titrations, while the deposits are analysed via Raman spectroscopy, infra-red spectroscopy, X-ray photoelectron spectroscopy and X-ray diffractometry. The determined oxygen contents are similar to those of chemically reduced graphene oxide, and the conductivity of the deposits was found to be ∼20 S cm -1.

Original languageEnglish
Pages (from-to)9187-9193
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume13
Issue number20
DOIs
Publication statusPublished - 2011 May 28
Externally publishedYes

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Graphite
Electrodeposition
electrodeposition
Suspensions
graphene
Oxides
Deposits
conductivity
Quartz crystal microbalances
deposits
Deposition rates
Titration
X ray diffraction analysis
Cyclic voltammetry
oxides
Raman spectroscopy
Infrared spectroscopy
X ray photoelectron spectroscopy
quartz crystals
Spectroscopy

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Hilder, M., Winther Jensen, B., Li, D., Forsyth, M., & MacFarlane, D. R. (2011). Direct electro-deposition of graphene from aqueous suspensions. Physical Chemistry Chemical Physics, 13(20), 9187-9193. https://doi.org/10.1039/c1cp20173e

Direct electro-deposition of graphene from aqueous suspensions. / Hilder, Matthias; Winther Jensen, Bjorn; Li, Dan; Forsyth, Maria; MacFarlane, Douglas R.

In: Physical Chemistry Chemical Physics, Vol. 13, No. 20, 28.05.2011, p. 9187-9193.

Research output: Contribution to journalArticle

Hilder, M, Winther Jensen, B, Li, D, Forsyth, M & MacFarlane, DR 2011, 'Direct electro-deposition of graphene from aqueous suspensions', Physical Chemistry Chemical Physics, vol. 13, no. 20, pp. 9187-9193. https://doi.org/10.1039/c1cp20173e
Hilder M, Winther Jensen B, Li D, Forsyth M, MacFarlane DR. Direct electro-deposition of graphene from aqueous suspensions. Physical Chemistry Chemical Physics. 2011 May 28;13(20):9187-9193. https://doi.org/10.1039/c1cp20173e
Hilder, Matthias ; Winther Jensen, Bjorn ; Li, Dan ; Forsyth, Maria ; MacFarlane, Douglas R. / Direct electro-deposition of graphene from aqueous suspensions. In: Physical Chemistry Chemical Physics. 2011 ; Vol. 13, No. 20. pp. 9187-9193.
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