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Synchrotron based operando surface X‐ray scattering study towards structure–activity relationships of model electrocatalysts
Author(s) -
Goryachev Andrey,
Carlà Francesco,
Drnec Jakub,
Onderwaater Willem G.,
Felici Roberto,
Krause Philipp P. T.,
Wonders Ad H.,
Hensen Emiel J. M.,
Hofmann Jan P.
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600355
Subject(s) - grazing incidence small angle scattering , electrocatalyst , x ray reflectivity , scattering , materials science , electrolysis , synchrotron , diffraction , electrochemistry , analytical chemistry (journal) , x ray , electrode , crystallography , chemistry , optics , nanotechnology , physics , thin film , chromatography , small angle neutron scattering , neutron scattering , electrolyte
A novel combination of Surface X‐ray Scattering techniques (SXS), i. e. GISAXS (Grazing‐Incidence Small‐Angle X‐Ray Scattering), XRR (X‐Ray Reflectivity) and SXRD (Surface X‐Ray Diffraction) alongside with simultaneous detection of gaseous products by OLEMS (On‐Line Electrochemical Mass Spectrometry) has been applied to study under operando conditions structure‐activity relationships of a Pt model electrocatalyst. The SXS‐OLEMS combination is able to follow dynamic changes in surface morphology and crystallography during water electrolysis. To showcase the combined SXS‐OLEMS setup for operando studies of electrode transformations, H 2 and O 2 evolution reactions (HER and OER) on a Pt model electrocatalyst and their dependence on type and degree of surface roughening have been investigated.