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12 results for “oxygen evolution reaction”
Dataset of "Tracking high-valent surface iron species in the oxygen evolution reaction on cobalt iron (oxy)hydroxides"
<p>Dataset of the paper entitled "Tracking high-valent surface iron species in the oxygen evolution reaction on cobalt iron (oxy)hydroxides"</p>
Research data for "Phase transitions in NiO during the Oxygen Evolution Reaction assessed via electrochromic phenomena through operando UV-Vis spectroscopy"
<p>This is the dataset supporting the publication "Phase transitions in NiO during the Oxygen Evolution Reaction assessed via electrochromic phenomena through operando UV-Vis spectroscopy", published by the authors in Electrochimica Acta (2024), 144626 under <a title="Persistent link using digital object identifier" href="https://doi.org/10.1016/j.electacta.2024.144626" target="_blank" rel="noreferrer noopener">doi.org/10.1016/j.electacta.2024.144626</a>.</p> <p>The data is ordered according to Figure numbers in the main manuscript and the electronic supplementary information.</p>
DFT optimised structure used for the paper "Cation Insertion to Break the Activity/Stability Relationship for Highly Active Oxygen Evolution Reaction Catalyst"
<p>DFT optimised structures used to calculate the OER activities in "Cation Insertion to Break the Activity/Stability Relationship for Highly Active Oxygen Evolution Reaction Catalyst". The structures are bundled in two databases, LiIrO3.db which contains all structures for alpha-LiIrO<sub>3</sub> and KLiIrO3-disordered.db which contains all the structures for the disordered Li<sub>0.75</sub>K<sub>0.25</sub>(H<sub>2</sub>O)<sub>0.50</sub>IrO<sub>3 </sub>structure. The structures can be retrieved using the Atomic Simulation Environment (ASE, https://wiki.fysik.dtu.dk/ase/index.html). The keywords 'ads' and 'surface' can be used to search the structure, e.g. surface='Z-step' and ads='*OOH' will give the structure with OOH adsorbed on the Z-step surface (see paper for details on the different surfaces).</p>
Operando evidence on the chirality-enhanced oxygen evolution reaction in intrinsically chiral electrocatalysts
<p><span>Additional raw data files for manuscript </span>"Operando evidence on the chirality-enhanced oxygen evolution reaction in intrinsically chiral electrocatalysts"</p> <p>Felipe A. García-Pineda, a Jiahao Yu,a Camilo A. Mesa,b Sergi Plana-Ruiz,c Daniel Ruano,c<br>Yunchang Liang,d Magalí Lingenfelder,d;e Sixto Giménez,b and J. R. Galan-Mascaros, a; f</p> <p>Abstract:<br>Electrolytic hydrogen is identified as a crucial component in the desired decarbonisation of the chemical<br>industry, utilizing renewable energy to split water into hydrogen and oxygen. Water electrolysis<br>still requires important scientific advances to improve its performance and lower its costs. One of the<br>bottlenecks in this direction relates to the sluggish anodic oxygen evolution reaction (OER). Producing<br>anodes with competitive performance remains challenging due to the high energy loses and the<br>harsh working conditions typically imposed by this complex oxidation process. Recent advancements<br>point to spin polarization as an opportunity to enhance the kinetics of this spin-restricted reaction,<br>yielding the paramagnetic O2 molecule. One powerful strategy deals with the generation of chiral<br>catalytic surfaces, typically by surface functionalisation with chiral organic molecules, to promote<br>chiral-induced spin selectivity (CISS) effect during electron transfer. However, the relationship between<br>chirality and enhanced electrocatalysis has been established only from indirect experimental<br>evidences. In this work, we have exploited operando electrochemical and spectroscopic tools to confirm<br>the direct relationship between the faster OER kinetics and the optical activity of enantiopure<br>Fe-Ni metal oxides when compared with their achiral catalysts in alkaline conditions. Our results<br>show the participation of chiral species as reactive intermediates during the electrocatalytic reaction,<br>supporting the appearance of a mechanistic CISS enhancement. Furthermore, these intrinsically chiral<br>transition-metal oxides maintain their enhanced activity in full cell electrolyser architectures at<br>industrially relevant current densities.</p> <p>of Science and Technology (BIST), Av. Paisos Catalans 16, Tarragona, 43007, Spain<br>E-mail: fgarces@iciq.es; jrgalan@iciq.es<br>b Institute of Advanced Materials (INAM), Castelló, Spain, Universitat Jaume I, Av. de<br>Vicente Sos Baynat, Castelló 12006, Spain<br>c SRCIT-Universitat Rovira i Virgili, Avinguda Pa¨õsos Catalans 26, Tarragona, 43007,<br>Spain<br>d Max Planck-EPFL Laboratory for Molecular Nanoscience and Technology, École Polytechnique<br>Fédérale de Lausanne (EPFL), Lausanne, 1015, Switzerland<br>e Helvetia Institute for Science and Innovation, Wollerau, 8832, Switzerland<br>f ICREA, Passeig Lluis Companys, 23, Barcelona, 08010, Spain<br><br></p>
Impact of synthesis routes of metal-oxide photoanodes on the oxygen evolution reaction kinetics
<p>Reducir las emisiones de CO2 es fundamental en la lucha contra el cambio climático y para ello, el uso y almacenamiento de energías renovables juega un papel importante. La fotosíntesis artificial, inspirados en la fotosíntesis natural, ha surgido como una de las soluciones más prometedoras para lograr este propósito. Tal y como lo hace una planta, esta tecnología apunta a almacenar energías alternativas, como la solar, eólica, geotérmica, etc., en forma de combustibles o enlaces químicos, como el hidrógeno verde, a través de la electrólisis de agua. Este proceso consiste en pasar una corriente eléctrica, proveniente de energías renovables, desde el cátodo hasta el ánodo a través del agua. Para que este proceso sea económicamente viable, es necesario que el cátodo, donde se produce el hidrógeno verde, y el ánodo, donde se produce oxígeno, estén fabricados de catalizadores económicos, abundantes y eficientes. Dentro de este grupo de catalizadores, aquellos basados en metales de transición tienen a ser los más estudiados por su abundancia y estabilidad. Sin embargo, las reacciones de evolución de hidrógeno y oxígeno presentan una cinética lenta, de manera que entender los mecanismos de reacción de dichos catalizadores es crucial para aumentar su eficiencia. En esta charla presentaré un resumen de las acciones que Colombia esta tomado frente al cambio climático, así como los avances más recientes en la producción de hidrógeno verde. Posteriormente, enfocaré la charla en los avances en investigación que he desarrollado en conjunto con mis colaboradores. En particular, explicaré los avances en el diseño e implementación de un sistema automatizado de ‘spray coating’ para producir materiales nanoestructurados de manera económica. Así mismo, explicaré con dos ejemplos los avances para producir nanomateriales y elucidar sus mecanismos de reacción para producir hidrógeno verde en un cátodo de Cu2S y oxígeno en un ánodo de α-Fe2O3.</p>
Raw data: The Chemical and Electronic Properties of Stability-Enhanced, Mixed Ir-TiOx Oxygen Evolution Reaction Catalysts
<p>Raw data for the publication:</p> <h4><em>The Chemical and Electronic Properties of Stability-Enhanced, Mixed Ir-TiO<sub>x</sub> Oxygen Evolution Reaction Catalysts</em></h4> <div>Marianne van der Merwe, Raul Garcia-Diez, Leopold Lahn, R. Enggar Wibowo, Johannes Frisch, Mihaela Gorgoi, Wanli Yang, Shigenori Ueda, Regan G. Wilks, Olga Kasian, and Marcus Bär</div> <div>ACS Catalysis <strong>2023</strong> <em>13</em> (23), 15427-15438</div> <p>DOI: 10.1021/acscatal.3c02948</p> <p><strong>Copyright © 2023 The Authors. Published by American Chemical Society</strong>. This publication is licensed under <a href="https://creativecommons.org/licenses/by/4.0/">CC-BY 4.0</a>.</p>
Raw data: Unravelling the mechanistic complexity of oxygen evolution reaction and Ir dissolution in highly dimensional amorphous hydrous iridium oxides
<p>Raw data for the manuscript titled:</p> <p><strong>Unravelling the mechanistic complexity of oxygen evolution reaction and Ir dissolution in highly dimensional amorphous hydrous iridium oxides</strong></p> <p> </p>
Low Ti Additions to Stabilize Ru‐Ir Electrocatalysts for the Oxygen Evolution Reaction
<p>Abstract:</p> <p>Anodic oxygen evolution reaction (OER) challenges large scale application of proton exchange membrane water electrolyzers (PEMWE) due to sluggish kinetics, high overpotential and extremely corrosive environment. While Ir oxides currently provide the best balance between activity and stability, the scarcity of Ir and corresponding high market price lead to poor cost-benefit factors. Mixing Ir with more stable non-precious Ti reduces the noble metal loading and may implicate stabilization, while addition of more catalytically active Ru ensures a high reaction rate. Here, we examine the activity-stability behavior of Ru-Ir-Ti thin film material libraries with low Ti content under the OER conditions. The high sensitivity to the dissolution of the individual alloy components was achieved by using online and offline inductively coupled plasma mass<br>spectrometry (ICP-MS) analysis. Our data reveal that even low Ti additions improve the stability of Ru-Ir catalysts without sacrificing activity. In particular, 5 at. % of Ti enable stability increase of Ir in the Ru-Ir catalyst by a factor of 3. Moreover, this catalyst exhibits higher activity compared to the Ti-free Ru-Ir alloys with similar Ir content. Observed activity-stability trends are discussed in light of X-ray photoelectron spectroscopy data.</p>
Dataset of a manuscript entitiled "Unraveling the enhancement of oxygen evolution reaction activity by incorporating chromium into nickel hydroxide nanosheets"
<p>Dataset of a manuscript entitiled "Unraveling the enhancement of oxygen evolution reaction activity by incorporating chromium into nickel hydroxide nanosheets"</p> <p>Not yet submitted.</p>
Hard X-ray photoelectron spectroscopy probing Fe segregation during oxygen evolution reaction
Open the record for dataset details and reuse information.
Chemical Vapor Deposition Strategy of Fe-N-C Nanotubes for the Oxygen Evolution Reaction
<p>Data associated with the paper to be published with the same title</p>
Chemical Vapor Deposition Strategy towards CuNiNC Films with Catalytic Activity for the Oxygen Evolution Reaction
<p>Data associated with the manuscript submitted for publication with the same title</p>
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