Graphene oxide nanosheet with high proton conductivity

Mohammad Razaul Karim, Kazuto Hatakeyama, Takeshi Matsui, Hiroshi Takehira, Takaaki Taniguchi, Michio Koinuma, Yasumichi Matsumoto, Tomoyuki Akutagawa, Takayoshi Nakamura, Shin Ichiro Noro, Teppei Yamada, Hiroshi Kitagawa, Shinya Hayami

研究成果: ジャーナルへの寄稿学術誌査読

421 被引用数 (Scopus)

抄録

We measured the proton conductivity of bulk graphite oxide (GO′), a graphene oxide/proton hybrid (GO-H), and a graphene oxide (GO) nanosheet for the first time. GO is a well-known electronic insulator, but for proton conduction we observed the reverse trend, as it exhibited superionic conductivity. The hydrophilic sites present in GO as -O-, -OH, and -COOH functional groups attract the protons, which propagate through hydrogen-bonding networks along the adsorbed water film. The proton conductivities of GO′ and GO-H at 100% humidity were ∼10-4 and ∼10-5 S cm-1, respectively, whereas that for GO was amazingly high, nearly 10-2 S cm-1. This finding indicates the possibility of GO-based perfect two-dimensional proton-conductive materials for applications in fuel cells, sensors, and so on.

本文言語英語
ページ(範囲)8097-8100
ページ数4
ジャーナルJournal of the American Chemical Society
135
22
DOI
出版ステータス出版済み - 6月 5 2013
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 触媒
  • 化学 (全般)
  • 生化学
  • コロイド化学および表面化学

フィンガープリント

「Graphene oxide nanosheet with high proton conductivity」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル