Dresden 2026 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 25: Solid-liquid interfaces: Structure, spectroscopy – Poster

O 25.2: Poster

Montag, 9. März 2026, 18:00–20:00, P2

Capacitance of Nanoconfined Salt Solutions: Interplay between Concentration and Temperature — •Caterina Sartori, Haoyuan Quan, Louis Lehmann, and Roland Netz — FU Berlin, Fachbereich Physik, Arnimallee 14 14195 Berlin, Germany

The capacitance of confined aqueous salt solutions is important for a variety of applications, including thermal energy conversion, but remains poorly understood. Performing Molecular Dynamics simulations and treating bulk electrolytes as a reservoir, we determine the temperature and bulk-concentration dependent density, slit concentration and capacitance of confined salt solutions. On a microscopic level, the capacitance is determined by the inverse dielectric profile, which we also present. Our results constitute a crucial step towards understanding the electrostatic behavior of confined electrolytes.

Keywords: Confined Electrolytes; Dielectric Profile; Aqueous Salt Solutions; Capacitance; Graphene