| 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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Koster, Gertjan
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Enhanced Piezoelectricity by Polarization Rotation through Thermal Strain Manipulation in PbZr<sub>0.6</sub>Ti<sub>0.4</sub>O<sub>3</sub> Thin Films
- 2024Orbital-overlap-driven hybridization in 3d-transition metal perovskite oxides LaMO3 (M = Ti-Ni) and La2CuO4citations
- 2024Orbital-overlap-driven hybridization in 3d-transition metal perovskite oxides LaMO3 (M = Ti-Ni) and La2CuO4citations
- 2024The effect of intrinsic magnetic order on electrochemical water splittingcitations
- 2024Thermally Stable Capacitive Energy-Density and Colossal Electrocaloric and Pyroelectric Effects of Sm-Doped Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 Thin Filmscitations
- 2024In Situ X-ray Absorption Spectroscopy of LaFeO3 and LaFeO3/LaNiO3 Thin Films in the Electrocatalytic Oxygen Evolution Reaction
- 2024In Situ X-ray Absorption Spectroscopy of LaFeO3 and LaFeO3/LaNiO3 Thin Films in the Electrocatalytic Oxygen Evolution Reactioncitations
- 2024Stabilizing Perovskite Pb(Mg<sub>0.33</sub>Nb<sub>0.67</sub>)O<sub>3</sub>-PbTiO<sub>3</sub> Thin Films by Fast Deposition and Tensile Mismatched Growth Templatecitations
- 2023Correlated Metals Transparent Conductors with High UV to Visible Transparency on Amorphous Substratescitations
- 2023On the importance of the SrTiO3 template and the electronic contact layer for the integration of phase-pure low hysteretic Pb(Mg0.33Nb0.67)O3-PbTiO3 layers with Sicitations
- 2023Epitaxial oxides on semiconductors: growth perspectives and device applications
- 2023Epitaxial growth of the candidate ferroelectric Rashba material SrBiO<sub>3</sub> by pulsed laser deposition
- 2023Non-stoichiometry and its implications for the properties of PMN–PT thin filmscitations
- 2023A High-Entropy Oxide as High-Activity Electrocatalyst for Water Oxidationcitations
- 2023A High-Entropy Oxide as High-Activity Electrocatalyst for Water Oxidationcitations
- 2022A high entropy oxide as high-activity electrocatalyst for water oxidation
- 2022Large imprint in epitaxial 0.67Pb(Mg<sub>1/3</sub>Nb<sub>2/3</sub>)O<sub>3</sub>-0.33PbTiO<sub>3</sub> thin films for piezoelectric energy harvesting applicationscitations
- 2021Growth and crystallization of sio2/geo2 thin films on si(100) substratescitations
- 2021Growth and crystallization of sio 2 /geo 2 thin films on si(100) substratescitations
- 2020Single-Source, Solvent-Free, Room Temperature Deposition of Black γ-CsSnI 3 Filmscitations
- 2020Tailoring Vanadium Dioxide Film Orientation Using Nanosheets: a Combined Microscopy, Diffraction, Transport, and Soft X‐Ray in Transmission Studycitations
- 2020Tailoring Vanadium Dioxide Film Orientation Using Nanosheets: a Combined Microscopy, Diffraction, Transport, and Soft X‐Ray in Transmission Studycitations
- 2020Single‐Source, Solvent‐Free, Room Temperature Deposition of Black γ‐CsSnI3 Filmscitations
- 2020Epitaxial growth of full range of compositions of (1 1 1) PbZr1- xTixO3 on GaNcitations
- 2020Tailoring Vanadium Dioxide Film Orientation Using Nanosheets : a Combined Microscopy, Diffraction, Transport, and Soft X-Ray in Transmission Studycitations
- 2020Atomic layer deposition of SiO2-GeO2 multilayerscitations
- 2016Long-range domain structure and symmetry engineering by interfacial oxygen octahedral coupling at heterostructure interfacecitations
- 2015Epitaxy on Demandcitations
- 2014Patterning of Epitaxial Perovskites from Micro and Nano Molded Stencil Maskscitations
- 2012High-Temperature Magnetic Insulating Phase in Ultrathin La0.67Sr0.33MnO3 Filmscitations
- 2011Metallic and Insulating Interfaces of Amorphous SrTiO3-Based Oxide Heterostructurescitations
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document
A high entropy oxide as high-activity electrocatalyst for water oxidation
Abstract
<jats:p>High entropy materials are a new pathway in the development of high-activity (electro )catalysts because of the inherent tunability and coexistence of multiple potential active sites, which may lead to earth-abundant catalyst materials for energy-efficient electrochemical energy storage. In this report, we identify how the multi-cation composition in high entropy perovskite oxides (HEO) contributes to high catalytic activity for the oxygen evolution reaction (OER), i.e. the key kinetically limiting half-reactions in several electrochemical energy conversion technologies, including green hydrogen generation. We compare the activity of the (001) facet of LaCr0.2Mn0.2Fe0.2Co0.2Ni0.2O3-δ with the parent compounds (single B-site in the ABO3 perovskite). While the single B-site perovskites roughly follow the expected volcano-type activity trends, the HEO clearly outperforms all of its parent compounds with 2.8 to 100 times higher currents at fixed overpotential. As all samples were grown as an epitaxial layer, our results indicate an intrinsic composition–function relationships, avoiding the effects of complex geometries or unknown surface composition. In-depth X-ray photoemission studies reveal a synergistic effect of simultaneous oxidation and reduction of different transition metal cations during adsorption of reaction intermediates. The surprisingly high OER activity demonstrates that HEOs are a highly attractive, earth-abundant new material class for high-activity OER electrocatalysts, possibly allowing fine-tuning the activity beyond the scaling limits of mono- or bimetallic oxides.</jats:p>