• 文献标题:   Percolation scaling in composites of exfoliated MoS2 filled with nanotubes and graphene
  • 文献类型:   Article
  • 作  者:   CUNNINGHAM G, LOTYA M, MCEVOY N, DUESBERG GS, VAN DER SCHOOT P, COLEMAN JN
  • 作者关键词:  
  • 出版物名称:   NANOSCALE
  • ISSN:   2040-3364
  • 通讯作者地址:   Trinity Coll Dublin
  • 被引频次:   52
  • DOI:   10.1039/c2nr31782f
  • 出版年:   2012

▎ 摘  要

Applications of films of exfoliated layered compounds in many areas will be limited by their relatively low electrical conductivity. To address this, we have prepared and characterised composites of a nano-conductor (nanotubes or graphene) embedded in a matrix of exfoliated MoS2 nanosheets. Solvent exfoliation of MoS2 nanosheets, followed by blending with dispersions of graphene or nanotubes allowed the formation of such composite films by vacuum filtration. This gave spatially uniform mixtures with fully tuneable nano-conductor content. By addition of the nano-conducting phase, it was possible to vary the electrical conductivity of the composite over nine orders of magnitude. For both filler types the conductivity followed percolation scaling laws both above and below the percolation threshold. In the case of SWNT-filled composites, conductivities as high as similar to 40 S m(-1) were achieved at volume fractions as low as similar to 4%.