Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 64: New Methods
O 64.1: Poster
Mittwoch, 18. März 2015, 18:15–21:00, Poster A
Transfer chamber from electrochemical cell to UHV — •Georgijs Bakradze1, Reiner Krause1, Dirk Vogel2, Beibei Pang2, Andreas Erbe2, Martin Stratmann2, Michael Rohwerder2, and Karina Morgenstern1 — 1Ruhr-University in Bochum, Faculty of Chemistry and Biochemistry, Bochum — 2Max-Planck-Institut für Eisenforschung GmbH, Düsseldorf
We describe a custom-built transfer chamber dedicated to the transfer of electrodes from the liquid phase into the UHV. The transfer chamber allows to combine several surface analytical techniques, and, thus, to obtain valuable insights into structure and microscopic properties of the electrochemical double layer region on electrodes. The transfer chamber can be coupled to an experimental cluster having facilities for: (i) electrochemical preparation (allowing emersion from electrolyte solution under a constant potential into a controlled humid atmosphere), (ii) in situ electrochemical measurements (Kelvin probe), (iii) surface analysis (ambient-pressure XPS), and (iv) optical characterisation (FTIR spectroscopy). The transfer chamber allows the sample transfer without breaking the UHV conditions directly into a UHV chamber having facilities for microstructural characterisation (low-temperature STM). Efficiency and performance of the setup will be tested on the Au(111) surface, which will be prepared under controlled electrode potentials and relative humidity conditions, revealing the influence of ions on the structure of condensed water layers in realistic electrochemical environments.