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A low-temperature method to produce highly reduced graphene oxide

Author

Listed:
  • Hongbin Feng

    (Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University)

  • Rui Cheng

    (University of California)

  • Xin Zhao

    (Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University)

  • Xiangfeng Duan

    (California NanoSystems Institute, University of California)

  • Jinghong Li

    (Beijing Key Laboratory for Analytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Tsinghua University)

Abstract

Chemical reduction of graphene oxide can be used to produce large quantities of reduced graphene oxide for potential application in electronics, optoelectronics, composite materials and energy-storage devices. Here we report a highly efficient one-pot reduction of graphene oxide using a sodium-ammonia solution as the reducing agent. The solvated electrons in sodium-ammonia solution can effectively facilitate the de-oxygenation of graphene oxide and the restoration of π-conjugation to produce reduced graphene oxide samples with an oxygen content of 5.6 wt%. Electrical characterization of single reduced graphene oxide flakes demonstrates a high hole mobility of 123 cm2 Vs−1. In addition, we show that the pre-formed graphene oxide thin film can be directly reduced to form reduced graphene oxide film with a combined low sheet resistance (~350 Ω per square with ~80% transmittance). Our study demonstrates a new, low-temperature solution processing approach to high-quality graphene materials with lowest sheet resistance and highest carrier mobility.

Suggested Citation

  • Hongbin Feng & Rui Cheng & Xin Zhao & Xiangfeng Duan & Jinghong Li, 2013. "A low-temperature method to produce highly reduced graphene oxide," Nature Communications, Nature, vol. 4(1), pages 1-8, June.
    • Handle: RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2555
    DOI: 10.1038/ncomms2555
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    Cited by:

    1. Yaqoob, Lubna & Noor, Tayyaba & Iqbal, Naseem & Nasir, Habib & Sohail, Manzar & Zaman, Neelam & Usman, Muhammad, 2020. "Nanocomposites of cobalt benzene tricarboxylic acid MOF with rGO: An efficient and robust electrocatalyst for oxygen evolution reaction (OER)," Renewable Energy, Elsevier, vol. 156(C), pages 1040-1054.
    2. Li, Yong & Yang, Jie & Song, Jian, 2017. "Structure models and nano energy system design for proton exchange membrane fuel cells in electric energy vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 67(C), pages 160-172.
    3. Li, Yong & Song, Jian & Yang, Jie, 2015. "Graphene models and nano-scale characterization technologies for fuel cell vehicle electrodes," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 66-77.

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