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 journalArticlepeer-review

210 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
Externally publishedYes

Bibliographical note

Funding Information:
This work was supported by Graphene Part & Material Development Program, Fundamental R&D Program for Core Technology of Materials, and Industrial Strategic Technology Development Program funded by the Ministry of Trade, Industry and Energy, Republic of Korea and partially by Korea Institute of Science and Technology . Synchrotron X-ray scattering tests were carried out at Pohang Light Source, Republic of Korea.

Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science

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