| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Tetteh, Emmanuel Batsa
Ruhr University Bochum
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Combinatorial screening of electronic and geometric effects in compositionally complex solid solutions toward a rational design of electrocatalystscitations
- 2023Combinatorial screening of electronic and geometric effects in compositionally complex solid solutions toward a rational design of electrocatalysts
- 2023Long‐range SECCM enables high‐throughput electrochemical screening of high entropy alloy electrocatalysts at up‐to‐industrial current densitiescitations
- 2023Scrutinizing intrinsic oxygen reduction reaction activity of a Fe−N−C catalyst via scanning electrochemical cell microscopycitations
- 2023Acidic hydrogen evolution electrocatalysis at high‐entropy alloys correlates with its composition‐dependent potential of zero chargecitations
- 2023Reassessing the intrinsic hydrogen evolution reaction activity of platinum using scanning electrochemical cell microscopycitations
- 2023Microscale combinatorial libraries for the discovery of high-entropy materialscitations
- 2023Reorganization energy in a polybromide ionic liquid measured by scanning electrochemical cell microscopycitations
- 2022Zooming‐in - visualization of active site heterogeneity in high entropy alloy electrocatalysts using scanning electrochemical cell microscopycitations
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article
Acidic hydrogen evolution electrocatalysis at high‐entropy alloys correlates with its composition‐dependent potential of zero charge
Abstract
<jats:title>Abstract</jats:title><jats:p>The vast possibilities in the elemental combinations of high‐entropy alloys (HEAs) make it essential to discover activity descriptors for establishing rational electrocatalyst design principles. Despite the increasing attention on the potential of zero charge (PZC) of hydrogen evolution reaction (HER) electrocatalyst, neither the PZC of HEAs nor the impact of the PZC on the HER activity at HEAs has been described. Here, we use scanning electrochemical cell microscopy (SECCM) to determine the PZC and the HER activities of various elemental compositions of a Pt−Pd−Ru−Ir−Ag thin‐film HEA materials library (HEA‐ML) with high statistical reliability. Interestingly, the PZC of Pt−Pd−Ru−Ir−Ag is linearly correlated with its composition‐weighted average work function. The HER current density in acidic media positively correlates with the PZC, which can be explained by the preconcentration of H<jats:sup>+</jats:sup> in the electrical double layer at potentials negative of the PZC.</jats:p>