Electrical conductive double-walled carbon nanotubes - Silica glass nanocomposites prepared by the sol-gel process and spark plasma sintering

SCRIPTA MATERIALIA

卷:61

Article

de Andrade, Monica Jung^1,2  Weibel, Alicia¹  Laurent, Christophe¹  Roth, Siegmar³  Bergmann, Carlos Perez²  Estournes, Claude¹  Peigney, Alain¹ 

[1] Univ Toulouse 3, CNRS, CIRIMAT, INP,UMR, F-31062 Toulouse 9, France

[2] Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil

[3] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

关键词: Carbon nanotubes;    Nanocomposites;    Silica;    Spark plasma sintering;    Electrical conductivity;   

DOI  :  10.1016/j.scriptamat.2009.08.015

来源: Elsevier

【 摘 要 】

The electrical conductivity of suspensions in liquid of several kinds of carbon nanotubes (CNTs) is measured. Raw and soft-functionalized double-walled carbon nanotubes (DWCNTs) appear to be the most promising for achieving a low electrical percolation threshold. A 0.35 vol.% DWCNTs-SiO2 nanocomposite is prepared by the sol-gel process and densified by spark plasma sintering. The obtained material presents a fairly good dispersion of DWCNTs and its electrical conductivity (10(-4) S cm(-1)) is six orders of magnitude higher than that previously reported for 1 vol.% multi-walled CNTs-SiO2. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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