Microwave-Assisted Synthesis of Graphene Oxide-MnO₂ Composites for Supercapacitors

Abstract:

Graphene oxide-MnO₂ (GO-MnO₂) was successfully synthesized by microwave-assisted method with the substrate of GO covered by MnO₂. MnO₂ contained disordered pore structure and aggregate of random shape. GO exhibited layer-like shape and had a large numbers of functional groups on its surface. The electrochemical measurements were employed by cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD), the results showed that the GO-MnO₂ composite had good capacitive performance, the maximum of specific capacitance was 127 F g^-1 at the current density of 100 mA g^-1.

• Periodical: Advanced Materials Research (Volume 936)
• Pages: 607-612
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.936.607
• Online since: June 2014
• Authors: Ying Wen Duan*, Xun Sun, Hong Yu Zhao, Zhi Bo Liu
• Keywords: Electrochemical Property, Graphene Oxide-MnO₂ Composites, Microwave-Assisted Synthesis, Super-Capacitor (SC)

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