• 文献标题:   Comparison of the effective conductivity between composites reinforced by graphene nanosheets and carbon nanotubes
  • 文献类型:   Article
  • 作  者:   XIE SH, LIU YY, LI JY
  • 作者关键词:  
  • 出版物名称:   APPLIED PHYSICS LETTERS
  • ISSN:   0003-6951 EI 1077-3118
  • 通讯作者地址:   Xiangtan Univ
  • 被引频次:   69
  • DOI:   10.1063/1.2949074
  • 出版年:   2008

▎ 摘  要

Both graphene nanosheets and carbon nanotubes have exceptional electric and thermal conductivities, rendering them excellent candidates as second-phase fillers in composite materials to substantially enhance their effective conductivities. Their markedly different geometries, however, can have significant effect on the effective conductivities of composites, which we investigate using an effective medium approximation. It is demonstrated that graphene nanosheet is more effective in conductivity enhancement than carbon nantubes, and both fillers lead to substantially higher conductivity and much reduced percolation threshold in composites. The effects of conductivity anisotropy and interfacial resistance are also discussed.