UM
In-situ welding carbon nanotubes into a porous solid with super-high compressive strength and fatigue resistance
Lin Z.1; Gui X.1; Gan Q.1; Chen W.1; Cheng X.1; Liu M.1; Zhu Y.1; Yang Y.2; Cao A.2; Tang Z.1
2015-06-11
Source PublicationScientific Reports
ISSN20452322
Volume5
AbstractCarbon nanotube (CNT) and graphene-based sponges and aerogels have an isotropic porous structure and their mechanical strength and stability are relatively lower. Here, we present a junction-welding approach to fabricate porous CNT solids in which all CNTs are coated and welded in situ by an amorphous carbon layer, forming an integral three-dimensional scaffold with fixed joints. The resulting CNT solids are robust, yet still highly porous and compressible, with compressive strengths up to 72â ‰MPa, flexural strengths up to 33â ‰MPa, and fatigue resistance (recovery after 100,000 large-strain compression cycles at high frequency). Significant enhancement of mechanical properties is attributed to the welding-induced interconnection and reinforcement of structural units, and synergistic effects stemming from the core-shell microstructures consisting of a flexible CNT framework and a rigid amorphous carbon shell. Our results provide a simple and effective method to manufacture high-strength porous materials by nanoscale welding.
DOI10.1038/srep11336
URLView the original
Language英語
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Cited Times [WOS]:20   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Sun Yat-Sen University
2.Peking University
3.Hong Kong University of Science and Technology
Recommended Citation
GB/T 7714
Lin Z.,Gui X.,Gan Q.,et al. In-situ welding carbon nanotubes into a porous solid with super-high compressive strength and fatigue resistance[J]. Scientific Reports,2015,5.
APA Lin Z..,Gui X..,Gan Q..,Chen W..,Cheng X..,...&Tang Z..(2015).In-situ welding carbon nanotubes into a porous solid with super-high compressive strength and fatigue resistance.Scientific Reports,5.
MLA Lin Z.,et al."In-situ welding carbon nanotubes into a porous solid with super-high compressive strength and fatigue resistance".Scientific Reports 5(2015).
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