Highly compressible 3D periodic graphene aerogel microlattices

Cheng Zhu, T. Yong-Jin Han, Eric B. Duoss, Alexandra M. Golobic, Joshua D. Kuntz, Christopher M. Spadaccini and Marcus A. Worsley ()
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Cheng Zhu: Lawrence Livermore National Laboratory
T. Yong-Jin Han: Lawrence Livermore National Laboratory
Eric B. Duoss: Lawrence Livermore National Laboratory
Alexandra M. Golobic: Lawrence Livermore National Laboratory
Joshua D. Kuntz: Lawrence Livermore National Laboratory
Christopher M. Spadaccini: Lawrence Livermore National Laboratory
Marcus A. Worsley: Lawrence Livermore National Laboratory

Nature Communications, 2015, vol. 6, issue 1, 1-8

Abstract: Abstract Graphene is a two-dimensional material that offers a unique combination of low density, exceptional mechanical properties, large surface area and excellent electrical conductivity. Recent progress has produced bulk 3D assemblies of graphene, such as graphene aerogels, but they possess purely stochastic porous networks, which limit their performance compared with the potential of an engineered architecture. Here we report the fabrication of periodic graphene aerogel microlattices, possessing an engineered architecture via a 3D printing technique known as direct ink writing. The 3D printed graphene aerogels are lightweight, highly conductive and exhibit supercompressibility (up to 90% compressive strain). Moreover, the Young’s moduli of the 3D printed graphene aerogels show an order of magnitude improvement over bulk graphene materials with comparable geometric density and possess large surface areas. Adapting the 3D printing technique to graphene aerogels realizes the possibility of fabricating a myriad of complex aerogel architectures for a broad range of applications.

Date: 2015
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DOI: 10.1038/ncomms7962

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