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Pré-Publication, Document De Travail Année : 2021

Pulsed discharge plasma for graphite exfoliation in liquid nitrogen

Adrien Létoffé
Cédric Noël
Gérard Henrion
Claire Hérold
Isabelle Royaud
Marc Ponçot
Sébastien Fontana
Stéphane Cuynet

Résumé

Highly Oriented Pyrolytic Graphite was exfoliated via pulsed discharge plasma in liquid nitrogen. The potential mechanisms involved were investigated by observing the treated surface of the graphitic material and the obtained particles. Non-exfoliating defects from the plasma treatment were observed and experimental parameter were modified to counteract those. One experiment was performed without exposing the HOPG directly to the discharges so as to better understand the plasma's role. The exfoliated particles were observed via TEM and SEM to evaluate the defects, the size, the purity and the crystallinity but no quantitative characterization of their thickness was possible so the actual number of layer of each particle is unknown. Nonetheless, few layers graphene (FLG) was successfully exfoliated through this process. The proposed mechanisms were extrapolated from the observation of the damaged HOPG surface and the obtained particles but the correlation found does not prove causation. I.
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Dates et versions

hal-03368920 , version 1 (07-10-2021)

Identifiants

Citer

Corentin da Silva Tousch, Quentin Liebgott, Adrien Létoffé, Dorra Ibrahim, Hiba Kabbara, et al.. Pulsed discharge plasma for graphite exfoliation in liquid nitrogen. 2021. ⟨hal-03368920⟩
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