Improvement of Electric Conductivity of Non-graphitizable Carbon Material via Breaking-down and Merging of the Microdomains

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  • Kim Doo-Won
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Kil Hyun-Sig
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
  • Nakabayashi Koji
    Interdisciplinary Graduate School of Engineering Science, Kyushu University | Institute for Materials Chemistry and Engineering, Kyushu University
  • Yoon Seong-Ho
    Interdisciplinary Graduate School of Engineering Science, Kyushu University | Institute for Materials Chemistry and Engineering, Kyushu University
  • Miyawaki Jin
    Interdisciplinary Graduate School of Engineering Sciences, Kyushu University | Institute for Materials Chemistry and Engineering, Kyushu University

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Abstract

Highly graphitized carbon with high electric conductivity was successfully prepared from non-graphitizable carbon (NGC) via breaking-down and merging of boundaries of microdomains through the potassium hydroxide (KOH) treatment and subsequent graphitization. After the graphitization at 2800℃, the KOH-treated sample showed modified domains having merged boundaries between the microdomains which could be observed in graphitizable carbon (GC). Such a domain-modified carbon showed less than half electric resistivity of graphitized NGC, indicating that macroscopic properties, such as electric conductivity, of carbon materials can be improved via the modification of nanometer-scale microdomain and domain structures.

Journal

  • Evergreen

    Evergreen 4 (1), 16-20, 2017-03

    Transdisciplinary Research and Education Center for Green Technologies, Kyushu University

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