First Principles Calculations of 1-methoxymethyl-1-methylpyrrolidinium and 1-ethyl-3-methylimidazolium Adsorption on Graphene

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Author(s)

    • KISHI Hirofumi
    • Department of Science & Technology and Applied Physics, Osaka University
    • TANI Masanori
    • Department of Science & Technology and Applied Physics, Osaka University
    • SAKAUE Mamoru
    • Department of Science & Technology and Applied Physics, Osaka University
    • KASAI Hideaki
    • Department of Science & Technology and Applied Physics, Osaka University

Abstract

  We focused on the basic adsorption properties of two types of cations, viz., 1-methoxymethyl-1-methylpyrrolidinium (MMMP) and 1-ethyl-3-methylimldazolium (EMI), on graphene, as a first step in investigating the properties of carbon electrodes in an electric double layer capacitor. To clarify the basic adsorption properties, we used first principles calculation based on the density functional theory with the generalized gradient approximation for the exchange-correlation energy. We investigated the electrical dipole moment formed between the cations and graphene and found that electric dipole moment per cation formed by MMMP is larger than by EMI. In addition, we found that intramolecular bindings of MMMP are stronger than those of EMI. Based on these results, we conclude that MMMP is more suitable as the material for electric double layer capacitor than EMI.<br>

Journal

  • Journal of the Vacuum Society of Japan

    Journal of the Vacuum Society of Japan 55(4), 198-203, 2012

    The Vacuum Society of Japan

Codes

  • NII Article ID (NAID)
    130004512904
  • Text Lang
    ENG
  • ISSN
    1882-2398
  • Data Source
    J-STAGE 
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