Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 20, Issue 4, Pages 743-748Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b917975e
Keywords
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Funding
- LDRD program at PNNL
- U. S. Department of Energy's (DOE's) Office of Biological and Environmental Research
- DOE [DE-AC05-76L01830]
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Graphene oxide is electrochemically reduced which is called electrochemically reduced graphene oxide (ER-G). ER-G is characterized with scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. The oxygen content is significantly decreased and the sp(2) carbon is restored after electrochemical reduction. ER-G exhibits much higher electrochemical capacitance and cycling durability than carbon nanotubes (CNTs) and chemically reduced graphene; the specific capacitance measured with cyclic voltammetry (20 mV s(-1)) is similar to 165, similar to 86, and similar to 100 F g(-1) for ER-G, CNTs, and chemically reduced graphene, respectively. The electrochemical reduction of oxygen and hydrogen peroxide are greatly enhanced on ER-G electrodes as compared with CNTs. ER-G has shown promising features for applications in energy storage, biosensors, and electrocatalysis.
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