Data di Pubblicazione:
2023
Citazione:
Blistering at the solid-liquid interface: the graphite case-study / G. Bussetti, R. Yivlialin, F. Ciccacci, L. Duó, A. Podestà - In: Reference Module in Chemistry, Molecular Sciences and Chemical EngineeringPrima edizione. - [s.l] : Elsevier, 2023. - ISBN 9780124095472. - pp. 1-11 [10.1016/B978-0-323-85669-0.00063-5]
Abstract:
The mechanical swelling of a sample surface, which produces bubbles having different dimensions (from the sub-micrometer
up to some tens of micrometer), is termed as blistering. This phenomenon was historically considered as a detriment of the
sample surface, while, more recently, it turned out to be a model system for testing the mechanical properties of confined 3D
objects. In particular, the development of blisters underneath a single layer of atoms (such as graphene) is crucial for the
investigation of permeability of ultrathin sheets. In the variety of materials well-documented in the scientific literature, we
present and discuss the specific case study of blister evolution on the basal plane of graphite, when the crystal undergoes an
ion-intercalation during the oxidation process. Our choice is motivated by the importance of investigating graphite in an
electrolytic environment, because of its electrochemical/mechanical performances that can be exploited in many applications:
as an electrode in electrochemical cells, batteries, fuel-cells, but also, as a layered-crystal, in procedures for graphene
production. More generally, the ion intercalation in graphite represents a model system to understand the mechanisms at
molecular length-scale of the insertion of molecules inside a stratified crystal. This process, driven by electrochemistry, can be
followed mainly by investigating the solid-liquid interface. Otherwise, investigating the graphite at the end of the intercalation
process after emersion outside of the electrolyte leads to the observation of many residues from the solution on the
graphite surface, which perturb the true morphology of blisters. In this case, rinsing the graphite surface with water would be
even more perturbing, since additional chemical reactions and phenomena would alter both the chemical status and
morphology of the intercalated electrode.
Tipologia IRIS:
03 - Contributo in volume
Keywords:
Cyclic voltammetry (CV); Electrochemical scanning probe microscopy (EC-SPM); Highly oriented pyrolytic graphite (HOPG); Intercalation; Oxidation processes; Scanning probe microscopy; Solid-liquid interface; Surface structure;
Elenco autori:
G. Bussetti, R. Yivlialin, F. Ciccacci, L. Duó, A. Podestà
Link alla scheda completa:
Titolo del libro:
Reference Module in Chemistry, Molecular Sciences and Chemical Engineering