X-ray Spectroscopic Insights into Electrocatalysis: Challenges and Opportunities

QUICK INFORMATION
Type
Seminar
Start Date
05-12-2019 14:00
End Date
05-12-2019 15:00
Location
Room 337, Central Building
Speaker's name
Viktoriia A. Saveleva
Speaker's institute
Paul Scherrer Institut, Switzerland
Contact name
Claudine Roméro
Host name
Pieter Glatzel
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X-ray spectroscopy techniques are very powerful tools for studies of catalyst materials including the ones used in energy conversion devices such as fuel cells and electrolyzers. However, in situ and/or operando analysis of the electrocatalysts using advanced spectroscopic methods is inevitably associated with a large number of challenges [1]. In this talk, I would like to discuss some of them, particularly focusing on the electrochemical cell designs, sample preparation, data interpretation and analysis. These problems will be illustrated with several examples from my research: operando studies of Ir,Ru-based catalysts using near ambient pressure X-ray photoelectron spectroscopy [2] and application of X-ray emission spectroscopy for analysis of iron spin state in Fe/N/C materials [3].

[1] - V.A. Saveleva and E.R. Savinova, Curr. Opin. Electrochem., 2019, 17, 79-89.
[2] - V.A. Saveleva, L. Wang, D. Teschner, T.E. Jones, A.S. Gago, K.A. Friedrich, S. Zafeiratos, R. Schloegl and E.R. Savinova, J. Phys. Chem. Lett., 2018, 9, 3154–3160.
[3] - V.A. Saveleva, K. Ebner, L. Ni, U.I. Kramm, A. Zitolo, J. Li, F. Jaouen, D. Klose, G. Smolentsev, O.V. Safonova, M. Nachtegaal, T.J. Schmidt, J. Herranz, under submission

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