Carbon Honeycomb High Capacity Storage for Gaseous and Liquid Species

This work summarizes the recent progress on the thermal transport properties of 3D nanostructures, with an emphasis on experimental results. Depending on the applications, different 3D nanostructures can be prepared or designed to either achieve a low thermal conductivity for thermal insulation or thermoelectric devices or a high thermal conductivity for thermal interface materials used in the continuing miniaturization of electronics. A broad range of 3D nanostructures are discussed, ranging from colloidal crystals/assemblies, array structures, holey structures, hierarchical structures, to 3D nanostructured fillers for metal matrix composites and polymer composites. Different factors that impact the thermal conductivity of these 3D structures are compared and analyzed. This work provides an overall understanding of the thermal transport properties of various 3D nanostructures, which will shed light on the thermal management at nanoscale.

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Section: D Nanostructures For High Thermal Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal Transport in 3D Nanostructures

Zhan

Nie

Chen

et al. 2019

Adv Funct Materials

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“…Very recently, carbon honeycombs, another 3-D carbon allotrope, has been experimentally synthesized by depositing vacuumsublimated graphite [4], and immediately became a research focus [5e9]. Indeed long before the successful synthesis of carbon honeycombs, a few hypothesized structures, which were sometimes called carbon foams, had been proposed [10e17].…”

Section: Introductionmentioning

confidence: 99%

On the influence of junction structures on the mechanical and thermal properties of carbon honeycombs

Pang

Wei

et al. 2017

Carbon

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a b s t r a c tCarbon honeycomb is a 3-dimensional carbon allotrope experimentally discovered recently, but its lattice structure has not been well identified. In this paper, we perform density-functional theory (DFT) calculations to examine the stability of carbon honeycombs with different configurations (chirality and sidewall width). We find that graphene nanoribbons with both zigzag edges and armchair edges can form stable carbon honeycombs if sp 3 carbon-carbon bonding is formed in the junction. We further study the mechanical properties and the thermal conductivity of carbon honeycombs with different chirality and the sidewall widths using both DFT calculations and molecular dynamics simulations. All these stable carbon honeycombs exhibit superior mechanical properties (large strength and ductility) and high thermal conductivity (larger than 100 W/m K) with a density as low as 0.5 g/cm 3. Light-weight carbon honeycombs could be promising functional materials for many engineering applications.

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“…In fact, experimental evidence has shown that smallest SWNTs with diameters of about 0.4 nm exist as an inner core of multiwall carbon nanotubes and can also be found in the nanosize channels of porous materials [39,40]. Moreover, Krainyukova et al [22] have recently reported a stable 3D-C by the deposition of vacuum-sublimated graphite that points out to the possibility of obtaining a (6 3 ) 3D-C structure. These experimental observations thus support a realization of the other 3D-C ALs in the near future.…”

Section: Energymentioning

confidence: 99%

Three-dimensional carbon Archimedean lattices for high-performance electromechanical actuators

Hung

Nugraha

Saito

2017

Carbon

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We propose three-dimensional carbon (3D-C) structures based on the Archimedean lattices (ALs) by combining sp 2 bonding in the polygon edges and sp 3 bonding in the polygon vertices. By first-principles calculations, four types of 3D-C ALs: (4, 8 2 ), (3, 12 2 ), (6 3 ), and (4 4 ) 3D-Cs are predicted to be stable both dynamically and mechanically among 11 possible ALs, in which the notations (p 1 , p 2 , . . .) are the indices of the AL structures. Depending on their indices, the 3D-C ALs show distinctive electronic properties: the (4, 8 2 ) 3D-C is an indirect band-gap semiconductor, the (3, 12 2 ) 3D-C is semimetal, while the (6 3 ) and (4 4 ) 3D-Cs are metals. Considering the structural deformation due to the changes in their electronic energy bands, we discuss the electromechanical properties of the 3D-C ALs as a function of charge doping. We find a semiconductor-to-metal and semimetallic-to-semiconductor transitions in the (4, 8 2 ) and (3, 12 2 ) 3D-Cs as a function of charge doping, respectively. Moreover, the (3, 12 2 ) 3D-C exhibits a sp 2 -sp 3 phase transformation at high charge doping, which leads to a huge 30% irreversible strain, while the reversible strain in the (4, 8 2 ) 3D-C is up to 9%, and thus they are quite promising for electromechanical actuators.

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Carbon Honeycomb High Capacity Storage for Gaseous and Liquid Species

Cited by 161 publications

References 19 publications

Thermal Transport in 3D Nanostructures

Thermal Transport in 3D Nanostructures

On the influence of junction structures on the mechanical and thermal properties of carbon honeycombs

Three-dimensional carbon Archimedean lattices for high-performance electromechanical actuators

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