Unveiling electrocatalytic interfaces in real time through in situ investigations
María Escudero-Escribano a b
a Catalan Institution for Research and Advanced Studies (ICREA), Pg. Lluís Companys 23, 08010 Barcelona, Spain
b Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and the Barcelona Institute of Science and Technology (BIST), Building ICN2, Campus UAB, E-08193 Bellaterra, Barcelona, Spain
Proceedings of MATSUS Spring 2026 Conference (MATSUSSpring26)
G5 In Situ and Operando Characterization Across Disciplines: Advanced Lab-Based Techniques for Energy Conversion Research
Barcelona, Spain, 2026 March 23rd - 27th
Organizers: Johanna Eichhorn and Verena Streibel
Invited Speaker, María Escudero-Escribano, presentation 175
Publication date: 15th December 2025

Tailoring the structure of the electrochemical interface is key to elucidating the structure-property relationships and reaction mechanisms in electrocatalysis. Fundamental work on well-defined electrified interfaces is pivotal to understanding the factors controlling the electrocatalytic activity and selectivity in renewable energy conversion reactions. This talk will discuss different strategies to understand the role of the electric double layer structure [1] in electrocatalytic reactions. In situ techniques are key to uncovering the structure of the electrochemical interface, the active sites, and the reaction mechanisms of electrocatalytic reactions for sustainable energy conversion. This talk will illustrate the importance of in situ characterisation combining vibrational spectroscopy and scanning electrochemical microscopy [2] to understand and tune the structure-activity-selectivity relationships for electrocatalytic reactions to produce renewable fuels and chemicals. These reactions include the electrosynthesis of green fuels and value-added chemicals such as sustainable fertilisers using electrochemical carbon dioxide, nitrate, and methane conversion [3-5]. These investigations are key to elucidating interfacial mechanisms and designing active and selective electrocatalytic interfaces.

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