Templated Growth of Covalently Bonded Three‐Dimensional Carbon Nanotube Networks Originated from Graphene

Fu, Ying; Carlberg, Björn; Lindahl, Niklas; Lindvall, Niclas; Bielecki, Johan; Matic, Aleksandar; Song, Yuxin; Hu, Zhili; Lai, Zonghe; Ye, Lilei; Sun, Jie; Zhang, Yahui; Zhang, Yan; Liu, Johan

doi:10.1002/adma.201104408

Cited by 38 publications

(26 citation statements)

References 63 publications

(77 reference statements)

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“…127, 128 may still be only theoretical structures, they can be used to model various nanoporous systems by selective choice of initial parameters of the CNT matrix to be welded (e.g., CNT chirality, inter‐tube separation and arrangement). The concept of CNT‐based foams appears even more attractive and promising especially in view of the recent experimental evidence of covalently bonded carbon nanomaterial networks which have shown drastically increased electrical,129 thermal,130 and mechanical131 properties.…”

Section: Re‐assembling Back Into 3d: Foams Fibersmentioning

confidence: 99%

Unfolding the Fullerene: Nanotubes, Graphene and Poly‐Elemental Varieties by Simulations

et al. 2012

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Recent research progress in nanostructured carbon has built upon and yet advanced far from the studies of more conventional carbon forms such as diamond, graphite, and perhaps coals. To some extent, the great attention to nano-carbons has been ignited by the discovery of the structurally least obvious, counterintuitive, small strained fullerene cages. Carbon nanotubes, discovered soon thereafter, and recently, the great interest in graphene, ignited by its extraordinary physics, are all interconnected in a blend of cross-fertilizing fields. Here we review the theoretical and computational models development in our group at Rice University, towards understanding the key structures and behaviors in the immense diversity of carbon allotropes. Our particular emphasis is on the role of certain transcending concepts (like elastic instabilities, dislocations, edges, etc.) which serve so well across the scales and for chemically various compositions.

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Section: Re‐assembling Back Into 3d: Foams Fibersmentioning

confidence: 99%

Unfolding the Fullerene: Nanotubes, Graphene and Poly‐Elemental Varieties by Simulations

et al. 2012

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“…For these random structures, many methods have been developed to modify the porous structure by forming covalent junctions25, nitrogen doping26, or introducing foreign molecules (e.g. polymer, graphene, amorphous carbon)82728, however, the resulting materials are not strong and the effect of reinforcement is rather limited.…”

mentioning

confidence: 99%

In-Situ Welding Carbon Nanotubes into a Porous Solid with Super-High Compressive Strength and Fatigue Resistance

Lin

Gui

Gan

et al. 2015

Sci Rep

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Carbon 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 72 MPa, flexural strengths up to 33 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.

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“…To date, a great effort has been made to manufacture covalent CNT assemblies, e.g., 1D, 2D, and 3D networks (Ting and Chang, 2002;Ma et al, 2009;Teng et al, 2011;Fu et al, 2012;Lalwani et al, 2013;Hashim et al, 2012). With the development of a …”

Section: Mechanical Performance Of Covalent Cnt Assembliesmentioning

confidence: 99%

Mechanical behavior of extra-strong CNT fibers and their composites

Yang

Liu

2015

Toughening Mechanisms in Composite Materials

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Templated Growth of Covalently Bonded Three‐Dimensional Carbon Nanotube Networks Originated from Graphene

Cited by 38 publications

References 63 publications

Unfolding the Fullerene: Nanotubes, Graphene and Poly‐Elemental Varieties by Simulations

Unfolding the Fullerene: Nanotubes, Graphene and Poly‐Elemental Varieties by Simulations

In-Situ Welding Carbon Nanotubes into a Porous Solid with Super-High Compressive Strength and Fatigue Resistance

Mechanical behavior of extra-strong CNT fibers and their composites

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