Tailoring mechanical and electrical properties of graphene oxide film for structural dielectric capacitors

Kit Ying Chan, Ardeshir Baktash, Baris Demir, Edwin L.H. Mayes, Dan Yang, Duy Quang Pham, Keng Te Lin, Adrian P. Mouritz, Andrew S.M. Ang, Bronwyn Fox, Bo Zhu, Han Lin, Baohua Jia, Kin-Tak Lau

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Graphene oxide (GO) films can be used in structural dielectric capacitors (SDCs) as both primary structures and energy storage devices for large transportation equipment like aircraft. To meet the high requirements for aviation application, in this paper the mechanical and dielectric properties of GO films were optimized by concisely tailoring their carbon-to-oxygen (C/O) ratio. Our results show that both the mechanical and electrical conductivity of GO films increase with increasing the C/O ratio. This work also demonstrates that both mechanical and dielectric properties of GO films can be enhanced simultaneously through a mild reduction whilst retaining the electrical insulating nature of GO for SDC applications. The insights provided in this work would be beneficial not only for SDC applications but also for fundamental studies and developments of GO related materials.

Original languageEnglish
Article number229020
Number of pages11
JournalJournal of Power Sources
Volume482
DOIs
Publication statusPublished - 15 Jan 2021
Externally publishedYes

Keywords

  • Carbon-to-oxygen ratio
  • Density functional theory (DFT)
  • Dielectric property
  • Graphene oxide
  • Mechanical property

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