Ultrahigh electrically and thermally conductive self-aligned graphene/polymer composites using large-area reduced graphene oxides

Pradip Kumar, Seunggun Yu, Faisal Shahzad, Soon Man Hong, Yoon Hyun Kim, Chong Min Koo

Research output: Contribution to journalArticle

108 Citations (Scopus)

Abstract

In this work, for the first time we fabricated highly self-aligned large-area reduced graphene oxide/poly (vinylidene fluoride-co-hexafluoropropylene) (rLGO/PVDF-HFP) composite films through simple solution casting followed by low temperature chemical reduction process. The resulting free-standing rLGO/PVDF-HFP composite thin film revealed excellent electrical conductivity of ∼3000 S/m and ultrahigh in-plane thermal conductivity of ∼19.5 W/mK at rLGO content of 27.2 wt %. This ultrahigh electrical and thermal conductivity were attributed to the good interfacial interaction, effective chemical reduction, high aspect ratio, and preferential orientation of graphene sheets along the film direction. We believe that our new fabrication procedure can be effectively used for large-scale production and commercialization of conductive composite materials for many thermal and electrical conduction applications.

Original languageEnglish
Pages (from-to)120-128
Number of pages9
JournalCarbon
Volume101
DOIs
Publication statusPublished - 2016 May 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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