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Ultrahigh Thermal Conductive Graphene Flexible Paper

Abstract

Graphene nanosheets (GNSs) possess outstanding conductivity, good thermal and chemical stabilities and desirable mechanical strengths. However, the unfunctionalized GNSs are hydrophobic and insoluble in water, which limits their application in many technological areas. Herein, we report a design strategy to exfoliate few-layered aqueous dispersible graphene by a simple ball-milling technique. The modifier of sodium lignosulfonate (LS) enables to synthesize LS-decorated GNSs from natural graphite based on the strong π-π interaction, greatly improving GNSs dispersion in water. The resultant GNSs with high production yield (~100%), high dispersion concentration and excellent film formation ability. The electrical and thermal conductivities of the as-prepared graphene paper were up to 2385 S cm-1 and 1324 W m-1 K-1, superior to most previously reported graphene materials. This graphene paper with the superb electrical and thermal conduction properties, also exhibits excellent mechanical flexibility and structure intensity during bending, which have potential usages in electronic packaging and high power thermal management.

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Publication details

The article was received on 07 Sep 2017, accepted on 12 Oct 2017 and first published on 13 Oct 2017


Article type: Paper
DOI: 10.1039/C7NR06667H
Citation: Nanoscale, 2017, Accepted Manuscript
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    Ultrahigh Thermal Conductive Graphene Flexible Paper

    J. ding, H. Zhao, Q. wang, H. dou, H. Chen and H. Yu, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR06667H

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