Search
Now showing items 11-20 of 24
Elucidating the Facet-dependent Selectivity for CO2 Electroreduction to Ethanol of Cu-Ag Tandem Catalysts
(ACS, 2021-04-07)
Despite being desirable high-value products of the electrochemical CO2 reduction reaction (CO2RR), alcohols are still obtained with lower selectivity compared to hydrocarbons and the reaction pathways leading to their ...
How symmetry factors cause potential- and facet-dependent pathway shifts during CO2 reduction to CH4 on Cu electrodes
(Elsevier, 2020-12-28)
The deactivation of copper electrodes is a serious problem that can affect the scalability and deployment of CO2 electrolyzers. The effect is generally attributed to the cathodic deposition of Fe and Zn impurities from the ...
Monitoring Active Sites for Hydrogen Evolution Reaction at Model Carbon Surfaces
(RSC, 2021-03-25)
Carbon is ubiquitous as an electrode material in electrochemical energy conversion devices. If used as support material, the evolution of H2 is undesired on carbon. However, recently carbon-based materials are of high ...
Energetics and Kinetics of Hydrogen Electrosorption on a Graphene-Covered Pt(111) Electrode
(American Chemical Society, 2023-01)
The Angstrom-scale space between graphene and its substrate provides an attractive playground for scientific exploration and can lead to breakthrough applications. Here, we report the energetics and kinetics of hydrogen ...
A general but still unknown characteristic of active oxygen evolution electrocatalysts
(Royal Society of Chemistry, 2023-04)
The unsatisfactory electrocatalysis of the oxygen evolution reaction (OER) is a major hurdle for the sustainable production of hydrogen using water electrolyzers. Besides, most state-of-the-art catalysts are based on ...
Mechanistic insight into electrocatalytic glyoxal reduction on copper and its relation to CO2 reduction
(Royal Society of Chemistry, 2022)
Copper electrodes produce several industrially relevant chemicals and fuels during the electrochemical CO2 reduction reaction (CO2RR). Knowledge about the reaction pathways can help tune the reaction selectivity toward ...
Structure-sensitive scaling relations among carbon-containing species and their possible impact on CO2 electroreduction
(Elsevier, 2021-01-24)
The arduous modelling of reactions at heterogeneous catalysts is greatly simplified when adsorption-energy scaling relations between intermediates exist. The offset of these linear relations is structure-independent when ...
Enhancing CO2 Electroreduction to Ethanol on Copper-Silver Composites by Opening an Alternative Catalytic Pathway
(ACS, 2020-03-16)
A fundamental question in the electrochemical CO2 reduction reaction (CO2RR) is how to rationally control the catalytic selectivity. For instance, adding a CO-producing metal like Ag to Cu shifts the latter’s CO2RR selectivity ...
A trade-off between ligand and strain effects optimizes the oxygen reduction activity of Pt alloys
(RSC, 2022-10-20)
To optimize the performance of catalytic materials, it is paramount to elucidate the dependence of the chemical reactivity on the atomic arrangement of the catalyst surface. Therefore, identifying the nature of the active ...
Enhanced Charge Transfer Kinetics for the Electroreduction of Carbon Dioxide on Silver Electrodes Functionalized with Cationic Surfactants
(Wiley, 2022-12-09)
Cationic ammonium surfactants can be used together with a suitable catalyst to enhance the electroreduction of carbon dioxide (CO2RR). However, the underlying reasons for the improvements are not yet well understood. In ...