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High thermal conductivity of free-standing skeleton in ...

2020-12-22 · Due to the high-porosity structure, the low thermal transport property of graphene foam (GF) is expected. However, the interconnected skeleton can still act as excellent thermal conductor branches if phonon scattering is not severely affected in the structure of graphene flakes.

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Hydroplastic foaming of graphene aerogels and …

Direct foaming from solids is the most efficient method to fabricate porous materials. However, the ideal foaming fails to prepare aerogel of nanoparticles because the plasticity of their solids is denied by the overwhelming interface interactions. Here, we invent a hydroplastic foaming method to directly convert graphene oxide solids into aerogel bulks and microarrays, replacing the prevalent ...

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Hydroplastic foaming of graphene aerogels and …

Direct foaming from solids is the most efficient method to fabricate porous materials. However, the ideal foaming fails to prepare aerogel of nanoparticles because the plasticity of their solids is denied by the overwhelming interface interactions. Here, we invent a hydroplastic foaming method to directly convert graphene oxide solids into aerogel bulks and microarrays, replacing the prevalent ...

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Thermally insulating and fire-retardant lightweight ...

Here, we show that freeze-casting suspensions of cellulose nanofibres, graphene oxide and sepiolite nanorods produces super-insulating, fire-retardant and strong anisotropic foams that perform better than traditional polymer-based insulating materials. The foams are ultralight, show excellent combustion resistance and exhibit a thermal ...

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Anti-inflammatory effects of three-dimensional …

Anti-inflammatory effects of three-dimensional graphene foams cultured with microglial cells Biomaterials. 2014 Aug;35(25):6930-40. doi: 10.1016/j.biomaterials.2014.05.002. Epub 2014 May 27. Authors Qin Song 1 ...

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Graphene foams: Cozy and conductive scaffolds for …

The graphene foams were synthesized by chemical vapor deposition using a Ni foam template. Scanning electron microscope observation showed a porous structure, which was determined to average 100 ...

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Graphene Foams, Process to Manufacture Them, and …

Reduced graphene oxide foams are used in the manufacture of composites and porous materials with desirable mechanical, electrical, and barrier properties. This invention describes a novel method to produce reduced graphene oxide foams by reducing exfoliated graphene oxide in aqueous dispersions.

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Graphene foams: Cozy and conductive scaffolds for …

The graphene foams were synthesized by chemical vapor deposition using a Ni foam template. Scanning electron microscope observation showed a porous structure, which was determined to average 100 ...

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Heat dissipation in graphene foams | SpringerLink

2020-10-31 · Graphene foam (GF)—a three-dimensional network of hollow graphene branches—is a highly attractive material for diverse applications. However, to date, the heat dissipation characteristics of GFs have not been characterized. To fill this gap, we synthesized GF devices, subjected them to high temperatures, and investigated their thermal behavior by using infrared microthermography.

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Graphene Foams, Process to Manufacture Them, and …

Reduced graphene oxide foams are used in the manufacture of composites and porous materials with desirable mechanical, electrical, and barrier properties. This invention describes a novel method to produce reduced graphene oxide foams by reducing exfoliated graphene oxide in aqueous dispersions.

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Revolutionary 3D Graphene Foam Manufacturing

2020-12-11 · Graphene foams have received increased interest over the years thanks to the discovery and development of Laser-Induced Graphene (LIG) by Dr James Tour from Rice University. Graphene foams involve a carbon-rich surface being lasered to produce a 3D graphene foam. Earlier this year, Dr Tour stated that there is a very high amount of research and ...

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Revolutionary 3D Graphene Foam Manufacturing

2020-12-11 · Graphene foams have received increased interest over the years thanks to the discovery and development of Laser-Induced Graphene (LIG) by Dr James Tour from Rice University. Graphene foams involve a carbon-rich surface being lasered to produce a 3D graphene foam. Earlier this year, Dr Tour stated that there is a very high amount of research and ...

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High-quality graphene foams are made from organic …

Graphene foams are normally produced by chemical vapour deposition. Carbon containing gases, such as methane, and carrier gases are introduced to a heated metal foam substrate – usually nickel or copper. As the gases contact the substrate, they deposit a film of carbon atoms. Once the reaction is complete, the metal is etched away leaving ...

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High-quality graphene foams are made from organic …

Graphene foams are normally produced by chemical vapour deposition. Carbon containing gases, such as methane, and carrier gases are introduced to a heated metal foam substrate – usually nickel or copper. As the gases contact the substrate, they deposit a film of carbon atoms. Once the reaction is complete, the metal is etched away leaving ...

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Functional Nanoporous Graphene Foams with …

Graphene foams can distribute along the thickness of beams in different patterns. The material properties of three-dimensional graphene foams are described by the scaling laws of open-cell foams ...

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Multifunctional Polymer-Based Graphene Foams with …

The polymer-based graphene foams were prepared by a simple and scalable method, using a combination of chemically self-assembly and mechanically …

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Multifunctional Polymer-Based Graphene Foams with …

The polymer-based graphene foams were prepared by a simple and scalable method, using a combination of chemically self-assembly and mechanically …

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[Physicsworld.com]High-quality graphene foams are …

Full of holes: scanning electron microscope image of a graphene foam made using cellulose. The ring-like structures are about 500 micron in diameter. (Courtesy: Shun Zhanget al./Nature Sustainability)High-quality graphene foams have been made from the waste gases produced during the high temperature treatment of organic waste. Researchers in China say their pyrolysis-based technique is cheaper ...