Electrochemistry at chemically modified graphenes

Adriano Ambrosi, Alessandra Bonanni, Zdeněk Sofer, Jeffrey S. Cross, Martin Pumera

Research output: Contribution to journalArticle

241 Citations (Scopus)

Abstract

Electrochemical applications of graphene are of great interest to many researchers as they can potentially lead to crucial technological advancements in fabrication of electrochemical devices for energy production and storage, and highly sensitive sensors. There are many routes towards fabrication of bulk quantities of chemically modified graphenes (CMG) for applications such as electrode materials. Each of them yields different graphene materials with different functionalities and structural defects. Here, we compare the electrochemical properties of five different chemically modified graphenes: graphite oxide, graphene oxide, thermally reduced graphene oxide, chemically reduced graphene oxide, and electrochemically reduced graphene oxide. We characterized these materials using transmission electron microscopy, Raman spectroscopy, high-resolution X-ray photoelectron spectroscopy, electrochemical impedance spectroscopy, and cyclic voltammetry, which allowed us to correlate the electrochemical properties with the structural and chemical features of the CMGs. We found that thermally reduced graphene oxide offers the most favorable electrochemical performance among the different materials studied. Our findings have a profound impact for the applications of chemically modified graphenes in electrochemical devices.

Original languageEnglish
Pages (from-to)10763-10770
Number of pages8
JournalChemistry - A European Journal
Volume17
Issue number38
DOIs
Publication statusPublished - 2011 Sep 12

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Graphite
Electrochemistry
Graphene
Oxides
Electrochemical properties
Fabrication
Electrochemical impedance spectroscopy
Cyclic voltammetry
Raman spectroscopy
X ray photoelectron spectroscopy
Transmission electron microscopy
Defects
Electrodes
Sensors

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

Cite this

Ambrosi, Adriano ; Bonanni, Alessandra ; Sofer, Zdeněk ; Cross, Jeffrey S. ; Pumera, Martin. / Electrochemistry at chemically modified graphenes. In: Chemistry - A European Journal. 2011 ; Vol. 17, No. 38. pp. 10763-10770.
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Ambrosi, A, Bonanni, A, Sofer, Z, Cross, JS & Pumera, M 2011, 'Electrochemistry at chemically modified graphenes', Chemistry - A European Journal, vol. 17, no. 38, pp. 10763-10770. https://doi.org/10.1002/chem.201101117

Electrochemistry at chemically modified graphenes. / Ambrosi, Adriano; Bonanni, Alessandra; Sofer, Zdeněk; Cross, Jeffrey S.; Pumera, Martin.

In: Chemistry - A European Journal, Vol. 17, No. 38, 12.09.2011, p. 10763-10770.

Research output: Contribution to journalArticle

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