Percolative electrical conductivity of platy alumina/few-layer graphene multilayered composites

Ki Beom Choi, Jong Young Kim, Sung Min Lee, Kyu Hyoung Lee, Dae Ho Yoon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this work, we present a facile one-pot synthesis of a multilayer-structured platy alumina/few-layer graphene nanocomposite by planetary milling and hot pressing. The sintered composites have electrical conductivity exhibiting percolation behavior (threshold ~ 0.75 vol.%), which is much lower than graphene oxide/ceramic composites (> 3.0 vol.%). The conductivity data are well-described by the percolation theory, and the fitted exponent values are estimated to be 1.65 and 0.93 for t and q, respectively. The t and q values show conduction mechanisms intermediate between 2D- and 3D, which originates from quantum tunneling between nearest neighbored graphenes.

Original languageEnglish
Pages (from-to)257-260
Number of pages4
JournalJournal of the Korean Ceramic Society
Volume54
Issue number3
DOIs
Publication statusPublished - 2017 Jan 1

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Aluminum Oxide
Graphene
Alumina
Composite materials
Hot pressing
Oxides
Nanocomposites
Multilayers
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites

Cite this

Choi, Ki Beom ; Kim, Jong Young ; Lee, Sung Min ; Lee, Kyu Hyoung ; Yoon, Dae Ho. / Percolative electrical conductivity of platy alumina/few-layer graphene multilayered composites. In: Journal of the Korean Ceramic Society. 2017 ; Vol. 54, No. 3. pp. 257-260.
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Percolative electrical conductivity of platy alumina/few-layer graphene multilayered composites. / Choi, Ki Beom; Kim, Jong Young; Lee, Sung Min; Lee, Kyu Hyoung; Yoon, Dae Ho.

In: Journal of the Korean Ceramic Society, Vol. 54, No. 3, 01.01.2017, p. 257-260.

Research output: Contribution to journalArticle

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