3D Graphene Fibers Grown by Thermal Chemical Vapor Deposition

Jie Zeng, Xixi Ji, Yihui Ma, Zhongxing Zhang, Shuguang Wang, Zhonghua Ren, Chunyi Zhi, Jie Yu*

*Corresponding author for this work

    Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

    143 Citations (Scopus)

    Abstract

    3D assembly of graphene sheets (GSs) is important for preserving the merits of the single-atomic-layered structure. Simultaneously, vertical growth of GSs has long been a challenge for thermal chemical vapor deposition (CVD). Here, vertical growth of the GSs is achieved in a thermal CVD reactor and a novel 3D graphene structure, 3D graphene fibers (3DGFs), is developed. The 3DGFs are prepared by carbonizing electrospun polyacrylonitrile fibers in NH3 and subsequently in situ growing the radially oriented GSs using thermal CVD. The GSs on the 3DGFs are densely arranged and interconnected with the edges fully exposed on the surface, resulting in high performances in multiple aspects such as electrical conductivity (3.4 × 104–1.2 × 105 S m−1), electromagnetic shielding (60 932 dB cm2 g−1), and superhydrophobicity and superoleophilicity, which are far superior to the existing 3D graphene materials. With the extraordinary properties along with the easy scalability of the simple thermal CVD, the novel 3DGFs are highly promising for many applications such as high-strength and conducting composites, flexible conductors, electromagnetic shielding, energy storage, catalysis, and separation and purification. Furthermore, this strategy can be widely used to grow the vertical GSs on many other substrates by thermal CVD.
    Original languageEnglish
    Article number1705380
    JournalAdvanced Materials
    Volume30
    Issue number12
    Online published9 Feb 2018
    DOIs
    Publication statusPublished - 22 Mar 2018

    Research Keywords

    • 3D graphene fibers
    • electrical conductivity
    • electromagnetic shielding
    • thermal chemical vapor deposition
    • vertical growth

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