The effect of the occurrence of a magnetic field of a current loop in hybrid graphene / C60 carbon systems

Glukhova, Olga E.; Митрофанов, В. В.; Слепченков, М. М.

doi:10.22226/2410-3535-2020-4-491-495

Cited by 5 publications

(2 citation statements)

References 26 publications

(23 reference statements)

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“…The search for graphene/metal composites is a new and actively developing branch of composite technologies [ 1 , 2 , 3 , 4 ]. The main component of these composites is graphene, which has low weight, high strength, and flexibility, as well as high electrical and thermal conductivity [ 5 , 6 , 7 , 8 , 9 ]. Such unique properties of graphene, added to the metal matrix, lead to the formation of composites with special properties that have use for future applications.…”

Section: Introductionmentioning

confidence: 99%

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

2023

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In the present work, the thermal conductivity and thermal expansion coefficients of a new morphology of Ni/graphene composites are studied by molecular dynamics. The matrix of the considered composite is crumpled graphene, which is composed of crumpled graphene flakes of 2–4 nm size connected by van der Waals force. Pores of the crumpled graphene matrix were filled with small Ni nanoparticles. Three composite structures with different sizes of Ni nanoparticles (or different Ni content—8, 16, and 24 at.% Ni) were considered. The thermal conductivity of Ni/graphene composite was associated with the formation of a crumpled graphene structure (with a high density of wrinkles) during the composite fabrication and with the formation of a contact boundary between the Ni and graphene network. It was found that, the greater the Ni content in the composite, the higher the thermal conductivity. For example, at 300 K, λ = 40 W/(mK) for 8 at.% Ni, λ = 50 W/(mK) for 16 at.% Ni, and λ = 60 W/(mK) for 24 at.% Ni. However, it was shown that thermal conductivity slightly depends on the temperature in a range between 100 and 600 K. The increase in the thermal expansion coefficient from 5 × 10−6 K−1, with an increase in the Ni content, to 8 × 10−6 K−1 is explained by the fact that pure Ni has high thermal conductivity. The results obtained on thermal properties combined with the high mechanical properties of Ni/graphene composites allow us to predict its application for the fabrication of new flexible electronics, supercapacitors, and Li-ion batteries.

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Section: Introductionmentioning

confidence: 99%

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

2023

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“…Graphene, a well-known twodimensional material, gave a fresh concept for new three-dimensional (3D) structures with complex architecture fabricated on the basis of graphene [2][3][4]. Carbon structures with unique electrical, mechanical, and thermal properties are of great interest today [5][6][7][8][9][10][11]. Recently, considerable attention has been paid to graphene fibers, a new type of carbon fiber consisting of many monolayers of wrinkled and crumpled graphene sheets [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Structure Morphology on the Mechanical Properties of Crumpled Graphene Fiber

Baimova

Polyakova

Shcherbinin

2021

Fibers

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Crumpled graphene fiber is a promising structure to be a graphene precursor to enhance the production and mechanical properties of various carbon fibers. The primary goal of the present work is to study the crumpled graphene of different morphologies using molecular dynamics simulations to find the effect of the structural peculiarities on the mechanical properties, such as the tensile strength, elastic modulus, and deformation characteristics. Mono- and poly-disperse structures are considered under uniaxial tension along two different axes. As it is found, both structures are isotropic and stress–strain curves for tension along different directions are very similar. Young’s modulus of crumpled graphene is close, about 50 and 80 GPa; however, the strength of the polydisperse structure is bigger at the elastic regime. While a monodisperse structure can in-elastically deform until high tensile strength of 90 GPa, structure analysis showed that polydisperse crumpled graphene fiber pores appeared two times faster than the monodisperse ones.

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Regimes of Angular Dynamics and Spin Formation of the C59Fe Molecule

Bubenchikov,

Mamontov

et al. 2023

Russ Phys J

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The effect of the occurrence of a magnetic field of a current loop in hybrid graphene / C60 carbon systems

Cited by 5 publications

References 26 publications

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

Thermal Expansion and Thermal Conductivity of Ni/Graphene Composite: Molecular Dynamics Simulation

Effect of the Structure Morphology on the Mechanical Properties of Crumpled Graphene Fiber

Regimes of Angular Dynamics and Spin Formation of the C59Fe Molecule

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