AVS 65th International Symposium & Exhibition
    In-situ Microscopy, Spectroscopy, and Microfluidics Focus Topic Monday Sessions
       Session MM+AS+NS+PC+SS-MoA

Paper MM+AS+NS+PC+SS-MoA4
Interfacial Electrochemistry in Liquids Probed with Photoemission Electron Microscopy

Monday, October 22, 2018, 2:20 pm, Room 202B

Session: X-ray and Electron Spectromicroscopy in Liquids and Gases & Flash Networking Session
Presenter: Tomas Duchon, Forschungszentrum Juelich GmbH, Germany
Authors: S. Nemsak, Forschungszentrum Juelich GmbH, Germany
E. Strelcov, NIST Center for Nanoscale Science and Technology
T. Duchon, Forschungszentrum Juelich GmbH, Germany
H.X. Guo, National Institute of Standards and Technology
J. Hackl, Forschungszentrum Juelich GmbH, Germany
A. Yualev, NIST Center for Nanoscale Science and Technology
I. Vlassiouk, Oak Ridge National Laboratory
D.N. Mueller, Forschungszentrum Juelich GmbH, Germany
C.M. Schneider, Forschungszentrum Juelich GmbH, Germany
A. Kolmakov, NIST Center for Nanoscale Science and Technology
Correspondent: Click to Email
The use of photoemission spectromicroscopy as a probe of liquid electrolytes has been an elusive goal, motivated by the breadth of information the technique can provide, but hindered by many technical difficulties. Here, we present a universal multichannel array platform employing graphene capping that allows for investigation of interfacial liquid electrochemistry via soft x-ray absorption and photoemission spectromicroscopy. The methodology is demonstrated in the case of copper electroplating from a sulphuric acid solution, that, along with cycles of copper deposition on gold electrodes, reveals hindered nucleation at the electrified graphene membrane evidenced by the presence of stable Cu+ ions.