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Superelastic and arbitrary-shaped graphene aerogels with sacrificial skeleton of melamine foam for varied applications
journal contribution
posted on 2018-02-21, 00:00 authored by C Li, Degang Jiang, H Liang, B Huo, C Liu, Wenrong YangWenrong Yang, J LiuElastic graphene aerogels are lightweight and offer excellent and electrical performance, expanding their significance in many applications. Recently, elastic graphene aerogels have been fabricated via various methods. However, for most reported elastic graphene aerogels, the fabrication processes are complicated and the applications are usually limited by the brittle mechanical properties. Thus, it still remains a challenge to explore facile processes for the fabrication of graphene aerogels with low density and high compressibility. Herein, arbitrary-shaped, superelastic, and durable graphene aerogels are fabricated using melamine foam as sacrificial skeleton. The resulting graphene aerogels possess high elasticity under compressive stress of 0.556 MPa and compressive strain of 95%. Thanks to the superelasticity, high strength, excellent flexibility, outstanding thermal stability, and good electrical conductivity of graphene aerogels, they can be applied in sorbents and pressure/strain sensors. The as-assembled graphene aerogels can adsorb various organic solvents at 176-513 g g -1 depending on the solvent type and density. Moreover, both the squeezing and combustion methods can be adopted for reusing the graphene aerogels. Finally, the graphene aerogels exhibit stable and sensitive current responses, making them the ideal candidates for applications as multifunctional pressure/strain sensors such as wearable devices.
History
Journal
Advanced functional materialsVolume
28Issue
8Article number
1704674Pagination
1 - 9Publisher
John Wiley & SonsLocation
Chichester, Eng.Publisher DOI
ISSN
1616-301XeISSN
1616-3028Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2017, WILEY-VCH Verlag GmbH & Co. KGaA, WeinheimUsage metrics
Categories
Keywords
adsorptionarbitrary shaped aerogelsgraphene aerogelspressure sensorssuperelastic aerogelsScience & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryPhysics, AppliedPhysics, Condensed MatterChemistryScience & Technology - Other TopicsMaterials SciencePhysicsHIGHLY-EFFICIENTMECHANICALLY ROBUSTRECYCLABLE SORBENTTEMPLATE SYNTHESISORGANIC-SOLVENTSHIGH-PERFORMANCECARBON AEROGELSSPONGY GRAPHENEENERGY-STORAGEPOISSONS RATIOFunctional Materials
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