Graphene-based mixed-dimensional materials hybridization is important for myriad applications. However, conventional manufacturing techniques face critical challenges in producing arbitrary geometries with programmable features, continuous interior networks and multi-materials homogeneity. Here we propose a generalized 3D printing methodology for graphene aerogels and graphene-based mixed-dimensional (2D+nD, n is 0, 1 or 2) hybrid aerogels with complex architectures, by the development of hybrid inks and printing schemes to enable mix-dimensional hybrids printability, overcoming the limitations of multi-components inhomogeneity and harsh post-treatments for additives removal. Importantly, non-planar designed geometries are also demonstrated by shape-conformable printing on curved surfaces. We further demonstrate the 3D-printed hybrid aerogels, as ultra-thick electrodes in a symmetric compression tolerant micro-supercapacitor, exhibiting quasi-proportionally enhanced areal capacitances at high levels of mass loading. The excellent performance is attributed to the sufficient ion- and electron- transport paths provided by the 3D-printed highly interconnected networks. The encouraging finding indicates tremendous potentials for practical energy storage applications. As a proof of concept, this general strategy provides avenues for various next-generation complex-shaped hybrid architectures from microscale to macroscale—<i>e.g.</i>, sea water desalination devices, electromagnetic shielding systems and so forth.

Generalized 3D printing of graphene-based mixed-dimensional hybrid aerogels

256th National Meeting (2018)

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