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Issue 6, 2014
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Enhanced electrochemical energy storage performance of reduced graphene oxide by incorporating oxygen-rich in-plane pores

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Abstract

To effectively enhance the electrochemical energy storage performance of graphene-based materials, oxygen-rich in-plane pores were incorporated into graphene backbones through sonochemical etching of graphene oxide (GO) and sequential chemical reduction treatment. The etching of GO produced a large amount of in-plane nanoscale pores with a high content of oxygen atoms. The hydrazine reduction treatment of etched GO (EGO) resulted in a porous basal plane with good electrical conductivity and preserved electrochemically active oxygen atoms. It is found that good conductivity and in-plane nanoscale pores of reduced EGO (REGO) with enriched electrochemically active oxygen groups synergistically reinforce the electric double-layer capacitance (EDLC) and the pseudocapacitance performance over a wide power density range. Electrodes using REGO demonstrated a maximum energy density of 47 W h kg−1, which is almost three times that of reduced graphene oxide (RGO) without etching treatment, while simultaneously displaying a high power density of up to 100 kW kg−1 with considerable energy density.

Graphical abstract: Enhanced electrochemical energy storage performance of reduced graphene oxide by incorporating oxygen-rich in-plane pores

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Publication details

The article was received on 13 Sep 2013, accepted on 09 Nov 2013 and first published on 11 Nov 2013


Article type: Paper
DOI: 10.1039/C3TA13678G
Citation: J. Mater. Chem. A, 2014,2, 1802-1808
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    Enhanced electrochemical energy storage performance of reduced graphene oxide by incorporating oxygen-rich in-plane pores

    L. Lu, L. Peng, C. Zhan, W. You and S. Xiao, J. Mater. Chem. A, 2014, 2, 1802
    DOI: 10.1039/C3TA13678G

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