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

被引：114

作者：

Abdelkader, Amr M. ^{[1
]}

Valles, Cristina ^{[1
]}

Cooper, Adam J. ^{[1
]}

Kinloch, Ian A. ^{[1
]}

Dryfe, Robert A. W. ^{[1
]}

机构：

[1] Univ Manchester, Manchester M13 9PL, Lancs, England

来源：

ACS NANO | 2014年 / 8卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

graphene oxide; molten halide; metallothermic reduction; surface corrugation; ELECTROCHEMICAL PREPARATION; CHEMICAL-REDUCTION; GRAPHITE OXIDE; EXFOLIATION; SHEETS;

D O I：

10.1021/nn505700x

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：11225 / 11233

页数：9

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