Article ID Journal Published Year Pages File Type
1520714 Materials Chemistry and Physics 2016 7 Pages PDF
Abstract

•Cr powder can reduced graphene oxide (GO) to reduced GO (rGO).•The one-pot reaction between GO and Cr powder to obtain the well dispersed Cr3+ ions decorated rGO.•The Cr2O3/rGO hybrids show excellent electrochemical performances than the pure Cr2O3.

This report describes an artful method to prepare Cr2O3/reduced graphene oxide (rGO) using Cr powder and graphene oxide (GO) as follows: the one-pot reaction between GO and Cr powder to obtain the well dispersed Cr3+ ions decorated rGO, followed by adding ammonia water and annealing to easily transform to Cr2O3/rGO hybrids. The introduction of rGO can improve the surface area and conductivity of the Cr2O3/rGO hybrids. Therefore, the Cr2O3/rGO hybrids show excellent electrochemical performances than pure Cr2O3, such as the three times as high specific capacitance of Cr2O3/rGO than pure Cr2O3. In addition, the Cr-based material could be also used as a class of electrode material of supercapacitors.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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