Single stage electrochemical exfoliation method for the production of few-layer graphene via intercalation of tetraalkylammonium cations

By A. J. Cooper, N. Wilson, I. Kinloch, R. Dryfe. 2014

250 citations recorded by the source corpus.

We present a non-oxidative production route to few layer graphene via the electrochemical intercalation of tetraalkylammonium cations into pristine graphite. Two forms of graphite have been studied as the source material with each yielding a slightly different result. Highly orientated pyrolytic graphite (HOPG) offers greater advantages in terms of the exfoliate size but the source electrode set up introduces difficulties to the procedure and requires the use of sonication. Using a graphite rod electrode, few layer graphene flakes (2 nm thickness) are formed directly although the flake diameters from this source are typically small (ca. 100–200 nm). Significantly, for a solvent based route, the graphite rod does not require ultrasonication or any secondary physical processing of the resulting dispersion. Flakes have been characterized using Raman spectroscopy, atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS).

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/8a9c2c29e130a55bbee40cc91e6957101bd422d9

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Citations in the corpus

Electrophoretic deposition of graphene-related materials: A review of the fundamentals (2016, methodology): “In organic dispersion media, electrochemical degradation may lead to the deposition of organic material, trapping or linking GRM particles [135].”
A Review on Recent Advancements of Graphene and Graphene-Related Materials in Biological Applications (2021, background): “5 eV could be diagnostic to discriminate rGO/graphene from GO that does not show it [70].”
Production and processing of graphene and related materials (2020, background): “Various graphite precursors (including natural graphite and synthetic graphite), in the form of powder, foil, paper, rod, flake and plate, have been studied for electrochemical exfoliation [397, 1734].”