Journal article

Ultratough cellular films from graphene oxide hydrogel: A way to exploit rigidity and flexibility of two-dimensional honeycomb carbon

Z Xiong, X Yun, B Tang, X Wang

Carbon | Published : 2016


The mechanical properties of hierarchically porous graphene films are unsatisfactory for the wide applications requiring toughness. Here, we report an innovative approach to construct anisotropic graphene-based cellular films with an oriented and interlinked microstructure, which can provide both high strength (2.4 ± 0.2 MPa) and extraordinary toughness (0.10 ± 0.01 MJ m-3). The specific strength (30 ± 2 MPa/(Mg m-3)) and specific modulus (8.4 ± 0.4 × 102 MPa/(Mg m-3)) of the porous films are even comparable to tough cancellous bone. The graphene oxide hydrogel films obtained from the shear and relaxation procedure are then reduced with hydroiodic acid/acetic acid, which solidifies the orien..

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University of Melbourne Researchers


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