Alkali Reduction of Graphene Oxide in Molten Halide Salts: Production of Corrugated Graphene Derivatives for High-Performance Supercapacitors

Amor Abdelkader; Cristina Valles; Adam J Cooper; Ian A Kinloch; Robert A W Dryfe

doi:10.1021/nn505700x

Alkali Reduction of Graphene Oxide in Molten Halide Salts: Production of Corrugated Graphene Derivatives for High-Performance Supercapacitors

Amor Abdelkader, Cristina Valles, Adam J Cooper, Ian A Kinloch, Robert A W Dryfe

Research output: Contribution to journal › Article › peer-review

Abstract

Herein we present a green and facile approach to the successful reduction of graphene oxide (GO) materials using molten halide flux at 370 degrees C. GO materials have been synthesized using a modified Hummers method and subsequently reduced for periods of up to 8 h. Reduced GO (rGO) flakes have been characterized using X-ray-diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR), all indicating a significantly reduced amount of oxygen-containing functionalities on the rGO materials. Furthermore, impressive electrical conductivities and electrochemical capacitances have been measured for the rGO flakes, which, along with the morphology determined from scanning electron microscopy, highlight the role of surface corrugation in these rGO materials.

Original language	English
Pages (from-to)	11225-11233
Number of pages	9
Journal	ACS Nano
Volume	8
Issue number	11
DOIs	https://doi.org/10.1021/nn505700x
Publication status	Published - 2014

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title = "Alkali Reduction of Graphene Oxide in Molten Halide Salts: Production of Corrugated Graphene Derivatives for High-Performance Supercapacitors",

abstract = "Herein we present a green and facile approach to the successful reduction of graphene oxide (GO) materials using molten halide flux at 370 degrees C. GO materials have been synthesized using a modified Hummers method and subsequently reduced for periods of up to 8 h. Reduced GO (rGO) flakes have been characterized using X-ray-diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR), all indicating a significantly reduced amount of oxygen-containing functionalities on the rGO materials. Furthermore, impressive electrical conductivities and electrochemical capacitances have been measured for the rGO flakes, which, along with the morphology determined from scanning electron microscopy, highlight the role of surface corrugation in these rGO materials.",

author = "Amor Abdelkader and Cristina Valles and Cooper, {Adam J} and Kinloch, {Ian A} and Dryfe, {Robert A W}",

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T1 - Alkali Reduction of Graphene Oxide in Molten Halide Salts

T2 - Production of Corrugated Graphene Derivatives for High-Performance Supercapacitors

AU - Abdelkader, Amor

AU - Valles, Cristina

AU - Cooper, Adam J

AU - Kinloch, Ian A

AU - Dryfe, Robert A W

N1 - Times Cited: 8 Cooper, Adam/0000-0002-7328-4361 0 8 1936-086x

PY - 2014

Y1 - 2014

N2 - Herein we present a green and facile approach to the successful reduction of graphene oxide (GO) materials using molten halide flux at 370 degrees C. GO materials have been synthesized using a modified Hummers method and subsequently reduced for periods of up to 8 h. Reduced GO (rGO) flakes have been characterized using X-ray-diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR), all indicating a significantly reduced amount of oxygen-containing functionalities on the rGO materials. Furthermore, impressive electrical conductivities and electrochemical capacitances have been measured for the rGO flakes, which, along with the morphology determined from scanning electron microscopy, highlight the role of surface corrugation in these rGO materials.

AB - Herein we present a green and facile approach to the successful reduction of graphene oxide (GO) materials using molten halide flux at 370 degrees C. GO materials have been synthesized using a modified Hummers method and subsequently reduced for periods of up to 8 h. Reduced GO (rGO) flakes have been characterized using X-ray-diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FTIR), all indicating a significantly reduced amount of oxygen-containing functionalities on the rGO materials. Furthermore, impressive electrical conductivities and electrochemical capacitances have been measured for the rGO flakes, which, along with the morphology determined from scanning electron microscopy, highlight the role of surface corrugation in these rGO materials.

U2 - 10.1021/nn505700x

DO - 10.1021/nn505700x

M3 - Article

SN - 1936-0851

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JO - ACS Nano

JF - ACS Nano

IS - 11

ER -

Alkali Reduction of Graphene Oxide in Molten Halide Salts: Production of Corrugated Graphene Derivatives for High-Performance Supercapacitors

Abstract

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