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Chemische Prozesse und Phasenübergänge Poster: Mi., 14:00–16:30 M-P177
Solid-Liquid Interface Analysis using the SoLiAS experimental station
Thomas Mayer 1 , Ralf Hunger 1 , Andreas Thißen 1 , Wolfram Jaegermann 1
1 Fachgebiet Oberflächenforschung, Institut für Materialwissenschaft, TU Darmstadt,
Petersenstr. 23, 64287 Darmstadt
Electrochemical processes like electrocatalysis, wet surface cleaning and etching, thin
film deposition, and corrosion are ubiquitous in modern life und usually exhibit a
considerable degree of scientific complexity. The SoLiAS experimental station (Solid-
Liquid-Interface Analysis System), is dedicated to the analysis of such processes using
3rd generation synchrotron light forstate-of-the-art photoemission and X-ray absorption
spectroscopy. Specific preparational facilities have been established within
SoLiAS in order to bridge the pressure and environmental gap: A purpose-designed
atmospheric pressure inert gas cell for ex-situ emersion experiments (cf. Fig. 1) allows
for high quality spectra even after transfer from the electrolyte. In addition, a
low-temperature-adsorption stage is used for the preparation of model electrolytes by
vacuum adsorption of electrolyte species under defined conditions (cf. Fig. 2).
In this contribution, the capabilities of the SoLiAS end station are presented and
illustrated with scientific projects from the course of four years of user operation. This
includes projects from applied fields as photovoltaic solar energy conversion, electrocatalysis
in fuel cells, and high density Li-ion batteries to projects from fundamental
research of electrolyte electronic structure, solvation effects, and nanostrutured film
formation, which have been conducted within our group and in collaboration with
project partners from the international electrochemistry community. The broad range
of research fields demonstrates the flexibility and versatility of the system.
Fig. 1: Electrochemical conditioning of
a Pt/Ru nanoparticle catalyst in the So-
LiAS system prior to emersion and analysis.
Fig. 2: Schematic setup of the SoLiAS
system.