2018
DOI: 10.1021/acsnano.8b06380
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Reconstruction of Inherent Graphene Oxide Liquid Crystals for Large-Scale Fabrication of Structure-Intact Graphene Aerogel Bulk toward Practical Applications

Abstract: The inherently formed liquid crystals (LCs) of graphene oxide (GO) in aqueous dispersions severely restrict the fabrication of large-size and structure-intact graphene aerogel bulk by an industry-applicable method. Herein, by developing a surfactant-foaming sol−gel method to effectively disrupt and reconstruct the inherent GO LCs via microbubbles as templates, we achieve the large-size and structure-intact graphene hydrogel bulk (GHB). After simple freezing and air-drying, the resulting graphene aerogel bulk (… Show more

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Cited by 140 publications
(112 citation statements)
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“…This phenomenon is firstly found in the graphene hydrogels, which is necessary for large‐scale and in‐situ fabrication of GAs based on the wet‐press assembly method. The key factor for no volume shrinkage is that the framework stiffness of SAGHs could resist the solvent evaporation capillary pressure . Here, the pressing process decreased the pore size, not only increasing the solvent evaporation capillary pressure but also enhancing the stiffness of 3D framework, which did not change the balance of them.…”
Section: Resultsmentioning
confidence: 99%
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“…This phenomenon is firstly found in the graphene hydrogels, which is necessary for large‐scale and in‐situ fabrication of GAs based on the wet‐press assembly method. The key factor for no volume shrinkage is that the framework stiffness of SAGHs could resist the solvent evaporation capillary pressure . Here, the pressing process decreased the pore size, not only increasing the solvent evaporation capillary pressure but also enhancing the stiffness of 3D framework, which did not change the balance of them.…”
Section: Resultsmentioning
confidence: 99%
“…As one kind of the fascinating mematerials, superelastic graphene‐based monoliths constructed by the atom‐thin graphene sheets hold many excellent properties, which are much better than that of natural materials, such as the ultrahigh recoverable compressive strain (>90%), outstanding tolerance for harsh environment, large porosity and specific surface area, high electrical and thermal conductivity, etc. They have shown great potentials as the mutifunctional frameworks to be applied in the fields of high‐performance damping, large strain sensor, fast oil‐water separation, and all‐round environment improvement, including flame retardation, thermal insulation, electromagnetic interference shielding, and sound absorption . Solution process methods based on the graphene oxide (GO) are regarded as the cost‐effective and versatile strategy to prepare graphene‐based monoliths .…”
Section: Introductionmentioning
confidence: 99%
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