- Influence of the Quantum Capacitance on Electrolyte Conductivity through Carbon Nanotubes doi link

Auteur(s): Hennequin-Nespoulous Théo, Manghi Manoel, Noury A., Henn F., Jourdain V., Palmeri J.

(Article) Publié: Journal Of Physical Chemistry Letters, vol. 15 p.2177–2183 (2024)
Texte intégral en Openaccess : arxiv

Ref HAL: hal-04234607_v1
Ref Arxiv: 2307.12071
DOI: 10.1021/acs.jpclett.3c03248
Ref. & Cit.: NASA ADS
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In recent experiments, unprecedentedly large values for the conductivity of electrolytes through carbon nanotubes (CNTs) have been measured, possibly owing to flow slip and a high pore surface charge density whose origin is still unknown. By accounting for the coupling between the {quantum} CNT and the {classical} electrolyte-filled pore capacitances, we study the case where a gate voltage is applied to the CNT. The computed surface charge and conductivity dependence on reservoir salt concentration and gate voltage are intimately connected to the CNT electronic density of states. This approach provides key insight into why metallic CNTs have larger conductivities than semi-conducting ones.