Multi-scale characterization of graphenic materials synthesized by a solvothermal-based process: Influence of the thermal treatment - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Solid State Sciences Année : 2015

Multi-scale characterization of graphenic materials synthesized by a solvothermal-based process: Influence of the thermal treatment

Lucie Speyer
Sébastien Fontana
Sébastien Cahen
Jaafar Ghanbaja
Ghouti Medjahdi
Claire Hérold

Résumé

Owing to its exceptional properties and a large range of possible applications, graphene gives rise to a great interest. Several major methods, as mechanical cleavage, liquid phase exfoliation of graphite and supported growth, have been developed these last years. However, it remains difficult to yield industrial quantities of graphene-based materials. Besides the research for the improvement of these major ways of synthesis, we focused on a much less common method: solvothermal synthesis. Graphenic powders can be obtained by a solvothermal reaction between ethanol and sodium followed by a thermal treatment step. We performed the solvothermal reaction and pyrolyzed the as-obtained sodium ethoxide with different temperature and time conditions, in order to study the influence of these two parameters on the final carbon-based sample. Various characterization techniques revealed the obtaining of graphenic materials with large aspect ratio, containing multi-layer graphene (MLG) regions. This study shows the strong influence of temperature and time of pyrolysis on purity, crystallinity and thickness of the samples, and goes toward an optimization of the thermal treatment step.

Domaines

Matériaux
Fichier non déposé

Dates et versions

hal-01289108 , version 1 (16-03-2016)

Identifiants

Citer

Lucie Speyer, Sébastien Fontana, Sébastien Cahen, Jaafar Ghanbaja, Ghouti Medjahdi, et al.. Multi-scale characterization of graphenic materials synthesized by a solvothermal-based process: Influence of the thermal treatment. Solid State Sciences, 2015, 50, pp.42-51. ⟨10.1016/j.solidstatesciences.2015.10.009⟩. ⟨hal-01289108⟩
45 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More