Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression
Graphene aerogels with high surface areas, ultra-low densities, and thermal conductivities have been attracted a lot of attention in recent years. However, considerable difference in their deformation behavior and mechanical properties lead to their poor performance. The problem can be solved by pre...
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MDPI AG
2024-12-01
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| Series: | Gels |
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| Online Access: | https://www.mdpi.com/2310-2861/11/1/3 |
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| author | Elizaveta Rozhnova Julia Baimova |
| author_facet | Elizaveta Rozhnova Julia Baimova |
| author_sort | Elizaveta Rozhnova |
| collection | DOAJ |
| description | Graphene aerogels with high surface areas, ultra-low densities, and thermal conductivities have been attracted a lot of attention in recent years. However, considerable difference in their deformation behavior and mechanical properties lead to their poor performance. The problem can be solved by preparing graphene aerogel of given morphology and by control the properties through the special structure of graphene cells. In the present work, molecular dynamics simulation is used to overview the mechanical properties of four different morphologies of graphene aerogel: honeycomb, cellular, lamellar and randomly distributed graphene flakes. All the structures are considered under uniaxial compression and tension with the detailed analysis of the deformation behavior. It is found that cellular structures have much better compressibility and elasticity. During both compression and tension, cellular structures can be transformed from one to another by controlling the compression/tensile direction. The highest strength and fracture strain are found for the lamellar GA under tension along the direction perpendicular to the alignment of the graphene walls. This reveals that the mechanical properties of graphene aerogels can be controlled by enhancing the structural morphology. The obtained results is the contribution which provide the insights into recent developments concerning the design of carbon-based structures and their application. |
| format | Article |
| id | doaj-art-d7f29ea415a043cebf995a31df8628f1 |
| institution | Kabale University |
| issn | 2310-2861 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Gels |
| spelling | doaj-art-d7f29ea415a043cebf995a31df8628f12025-01-24T13:33:44ZengMDPI AGGels2310-28612024-12-01111310.3390/gels11010003Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and CompressionElizaveta Rozhnova0Julia Baimova1Physical-Technical Institute, Ufa University of Science and Technology, Z. Validi 32, Ufa 450076, RussiaInstitute for Metals Superplasticity Problems of the Russian Academy of Sciences, Ufa 450001, RussiaGraphene aerogels with high surface areas, ultra-low densities, and thermal conductivities have been attracted a lot of attention in recent years. However, considerable difference in their deformation behavior and mechanical properties lead to their poor performance. The problem can be solved by preparing graphene aerogel of given morphology and by control the properties through the special structure of graphene cells. In the present work, molecular dynamics simulation is used to overview the mechanical properties of four different morphologies of graphene aerogel: honeycomb, cellular, lamellar and randomly distributed graphene flakes. All the structures are considered under uniaxial compression and tension with the detailed analysis of the deformation behavior. It is found that cellular structures have much better compressibility and elasticity. During both compression and tension, cellular structures can be transformed from one to another by controlling the compression/tensile direction. The highest strength and fracture strain are found for the lamellar GA under tension along the direction perpendicular to the alignment of the graphene walls. This reveals that the mechanical properties of graphene aerogels can be controlled by enhancing the structural morphology. The obtained results is the contribution which provide the insights into recent developments concerning the design of carbon-based structures and their application.https://www.mdpi.com/2310-2861/11/1/3graphene honeycombmolecular dynamicsstrengthcompression |
| spellingShingle | Elizaveta Rozhnova Julia Baimova Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression Gels graphene honeycomb molecular dynamics strength compression |
| title | Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression |
| title_full | Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression |
| title_fullStr | Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression |
| title_full_unstemmed | Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression |
| title_short | Morphology of Graphene Aerogel as the Key Factor: Mechanical Properties Under Tension and Compression |
| title_sort | morphology of graphene aerogel as the key factor mechanical properties under tension and compression |
| topic | graphene honeycomb molecular dynamics strength compression |
| url | https://www.mdpi.com/2310-2861/11/1/3 |
| work_keys_str_mv | AT elizavetarozhnova morphologyofgrapheneaerogelasthekeyfactormechanicalpropertiesundertensionandcompression AT juliabaimova morphologyofgrapheneaerogelasthekeyfactormechanicalpropertiesundertensionandcompression |