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24 results for “water splitting”
Dataset of "Cobalt and nickel doped WSe2 as efficient electrocatalysts for water splitting and as cathodes in hydrogen evolution reaction PEM water electrolysis"
<p>Efficient electrocatalysts are crucial for water splitting and fuel cells. Using cheap alternatives that can improve reaction kinetics is essntial for advancing fuel cell technology. Although, tungsten diselinide (WSe2) is promising for electrocatalysis is not fully explored, especially in oxygen evolution and in applications such as polymer electrolyte membrane water electrolyzer.<br>In this work, we used a simple approach to dope WSe2 with cobalt and/or nickel atoms. The doped material was subsequently tested for hydrogen evolution reaction and oxygen evolution reaction. Accordingly, the two electrocatalysts are highly active and stable, affording low overpotentials comparable to those of noble metals. The effective introduction of heteroatoms causes the retention of coordination vacancies, furnishing active catalytic sites that enhanced electrocatalytic performance both in activity and charge transfer. Moreover, both doped materials show excellent performance and stability as cathode electrocatalysts in the polymer electrolyte membrane water electrolyzer with great promise for real-world applications.</p>
Dataset of "High Entropy 2D Metals Sulfides: Fast Synthesis, Exfoliation and Electrochemical Activity in Overall Water Splitting at Alkaline pH"
<p>Novel simple and efficient method for synthesis of high entropy sulfides of iron group metals (Cr, Fe, Ni, Co, Zn) is describedThe created material was investigated as a catalyst for electrochemical water splitting in acidic, neutral and alkaline pH. Investigation of the electrocatalytic activity of the synthesized material shows its high efficiency for overall water splitting in alkaline media. </p>
Raw Data - Photo-Responsive Doped 3D-Printed Copper Electrodes for Water Splitting: Refractory One-Pot Doping Dramatically Enhances the Performance
<p>The dataset contains raw data that complements the article:</p> <p>Photo-Responsive Doped 3D-Printed Copper Electrodes for Water Splitting: Refractory One-Pot Doping Dramatically Enhances the Performance</p> <p>Christian Iffelsberger, Daniel Rojas, and Martin Pumera<strong>*</strong></p> <p>https://doi.org/10.1021/acs.jpcc.1c10686</p> <p>Related to the MSCA Project: 888797 LoCatSpot</p>
Data set for "The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices"
<p>This data set was used for the modelling in the article M. Kölbach, O. Höhn, K. Rehfeld, M. Finkbeiner, J. Barry, and M. M. May, “The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices”<strong><em>,</em></strong> <em>Sustainable Energy Fuels</em>, <strong>2022</strong>, <strong>6</strong>, 4062-4074, <a href="https://doi.org/10.1039/D2SE00561A">https://doi.org/10.1039/D2SE00561A</a>.</p> <p>It contains the External Quantum Efficiency (EQE) data of a wafer-bonded AlGaAs//Si dual-junction solar cell for several top absorber compositions, angle of incidences, and temperatures modelled using the OPTOS formalism (see <a href="https://doi.org/10.1364/OE.24.0A1083">https://doi.org/10.1364/OE.24.0A1083</a> , <a href="https://doi.org/10.1364/OE.23.0A1720">https://doi.org/10.1364/OE.23.0A1720</a> , and <a href="http://doi.org/10.1109/JPHOTOV.2021.3064562"> https://doi.org/10.1109/JPHOTOV.2021.3064562</a>). Moreover, the data set includes hourly resolved direct and diffuse solar spectra for a location near the Neumayer station in Antarctica (-70.67°/-8.28°) that were modelled using the libRadtran software package for the year 2021 (see <a href="https://doi.org/10.1140/epjconf/e2009-00912-1">https://doi.org/10.1140/epjconf/e2009-00912-1</a> and <a href="http://doi.org/10.5194/acp-5-1855-2005">https://doi.org/10.5194/acp-5-1855-2005</a>). The modelling of the spectra was performed employing the predefined “subarctic summer” and “subarctic winter” atmosphere datasets assuming a tilt angle of 70° and 1-axis tracking. For the sake of simplicity, no cloud cover was assumed over the course of the whole year. Finally, the input files required for modelling the climatic response of solar water splitting devices for the selected location in Antarctica using the “climatic_response_function” of YaSoFo (see <a href="http://doi.org/10.5281/zenodo.5257492">https://doi.org/10.5281/zenodo.5257492</a> for an extended example) are included in the data set.</p>
Small dataset machine-learning approach for efficient design space exploration: engineering ZnTe-based high-entropy alloys for water splitting
<p>Atomic structure data used in the research article entitled "Small Dataset Machine-Learning Approaches to Explore the Design Space of High-Entropy Alloys: Engineering ZnTe-based Multicomponent Alloys for the Photo-Splitting of Water"</p>
Ultra-stable self-standing Au nanowires/TiO2 nanoporous membrane system for high-performance photoelectrochemical water splitting cells - Dataset
<p>Dataset of results presented in <em><strong>Mater. Horiz.</strong></em>, 2022,<strong>9</strong>, 2797-2808: Ultra-stable self-standing Au nanowires/TiO<sub>2</sub> nanoporous membrane system for high-performance photoelectrochemical water splitting cells.</p> <p>E. W. would like to acknowledge Alexander von Humboldt Foundation, Bonn, Germany, for funding the postdoctoral fellowship, and the Polish National Agency For Academic Exchange, Polish Returns Programme (Project no. BPN/PPO/ 2021/1/00002), and the National Science Centre, Poland (Project no. 2022/01/1/ST5/00019) for financial support of the project. G. S. would like to acknowledge the National Science Centre, Poland (Project no. 2016/23/B/ST5/00790). The authors thank C. Erdmann for performing the transmission electron microscopy measurements.</p>
Describing ion transport and water splitting in an electrodialysis stack with bipolar membranes by a 2-D model: Experimental validation
<p>Electrodialysis with bipolar membranes (EDBM) has drawn attention motivated by their application in gener- ating reagents from salts. Due to the water splitting (WS) occurring at the junction of the bipolar membranes (BPMs), where the anion and cation layers are in strict contact, H+ and OH- are released from the BPM producing acid and alkali on the respective compartment. Considering this application, the interest of this work is to provide further understanding of the mechanisms of WS and transport of species in EDBM. This work develops and utilizes, for the first time, an experimentally validated two-dimensional (2-D) computational model, in which the Navier-Stokes and Nernst-Planck equations are coupled with the description of WS given by the Second Wien effect. In addition, a 1-D geometry is also proposed to perform a comparison between electroneutrality and Poisson charge conservation. The model is computationally solved using COMSOL Multiphysics. According to simulations, electroneutrality is valid for 2-D geometries. Moreover, the semipermeable characteristics of the membranes are assessed by means of evidencing a polarization effect resulting in a double-electric layer. The model proposed predicts a significant proton leakage, and facilitates the study of WS within the BPMs.</p>
Photoelectrochemical water splitting by triazine based covalent organic framework
<p>DFTB-optimised geometries of TFBB-TAB and TFBB-TAT as cif files.</p>
Exposed area dependent PEC performance of BiVO4 photoanodes for solar water splitting
<p>#Data set of "Exposed area dependent PEC performance of BiVO4 photoanodes for solar water splitting"</p> <p>---</p> <p>## GENERAL INFORMATION</p> <p>1. Data set title: "Exposed area dependent PEC performance of BiVO4 photoanodes for solar water splitting"</p> <p>2.Authorship: <br> Name: Christian Robles<br> Institution: Institute of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0003-1166-2950</p> <p> Name: Laura Montañés<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0002-1076-013X <br> <br> Name: Camilo A. Mesa<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0002-8450-2563</p> <p> Name: Ana Gutiérrez-Blanco<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0001-9412-2321</p> <p> Name: Francisco Fabregat-Santiago<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0002-7503-1245</p> <p> Name: Agustín O Alvarez<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID:0000-0002-0920-5390</p> <p> Name: Sixto Giménez<br> Institution: Institude of Advanced Materials (INAM), Universitat Jaume I, 12006, Castelló, Spain<br> ORCID: 0000-0002-4522-3174<br> Email: <sjulia@uji.es></p> <p>##FILE DESCRIPTION<br>---------------</p> <p>### Figure 1<br>-Fig1a.txt : Average photocurrent–voltage (J–V) plots measured by back illumination in 0.1 M KPi with 0.1 M Na2SO3 for the different exposed areas. Dark currents are represented as dashed lines.<br>-Fig1b.txt : Chronoamperometry plot measured by back illumination in 0.1 M KPi with 0.1 M Na2SO3 for the three exposed areas. Inset: BiVO4 photoanodes synthetized by electrochemical deposition and thermal evaporation. The area was delimited using an epoxy resin.<br>-Fig1c.txt : Average of current–voltage (J–V) plots measured by back illumination in 0.1 M KPi with 0.1 M Na2SO3 for an equal to exposed area of 1 cm2 (black), 0.2 cm2 (green) and a photoanode of 1 cm2 with a reduced exposed area of 0.2 cm2 (blue). </p> <p>### Figure 2<br>-Fig2a.txt : Charge-transfer resistance (Rct) as a function of applied potential extracted from IS.<br>-Fig2b.txt : Capacitance as a function of applied potential extracted from IS.<br>-Fig2c.txt : Series Resistance (Rc) as a function of the applied potential extracted from IS.<br>-Fig2d.txt : Density of surface states (DOS) as a function of applied potential extracted from IS.<br>-Fig2e.txt : IR-chopped chronoamperometry measurements at 1.2 V vs RHE.<br>-Fig2f.txt : Mobility of electrons (blue), diffusion resistance (green) and recombination resistance (red) as function of the exposed area extracted from the fitting of IMPS, IMVS and IMVS.</p> <p>### Figure S3<br>-FigS3a.txt : Current–voltage (J–V) plots measured in 0.1 M KPi (red) and 0.1 M KPi with 0.1 M Na2SO3 (blue).<br>-FigS3b.txt : Current–voltage (J–V) plots measured by front illumination (light blue) and back illumination (dark blue) in 0.1 M KPi with 0.1 M Na2SO3.</p> <p>### Figure S4<br>-FigS4a.txt : Incident-photon to current efficiency (IPCE) under back illumination measured and 0.1 M KPi with 0.1 M Na2SO3.<br>-FigS4b.txt : optical absorbance of the BiVO4 photoanode and its obtained bandgap (2.47 eV) extracted from the Tauc plot for a indirect transition.</p> <p>###Figure S5<br>-FigS5a.txt : Raman spectra for the 0.2 cm2 exposed area before measuring. Colours represent different spots measured in the same sample.<br>-FigS5b.txt : Raman spectra for the 0.4 cm2 exposed area before measuring. Colours represent different spots measured in the same sample.<br>-FigS5c.txt : Raman spectra for the 1 cm2 exposed area before measuring. Colours represent different spots measured in the same sample.<br>-FigS5d.txt : Raman spectra for the 0.2 cm2 exposed area after measuring. Colours represent different spots measured in the same sample.<br>-FigS5e.txt : Raman spectra for the 0.4 cm2 exposed area after measuring. Colours represent different spots measured in the same sample.<br>-FigS5f.txt : Raman spectra for the 1 cm2 exposed area after measuring. Colours represent different spots measured in the same sample.</p> <p> </p>
High Entropy 2D Metals Sulfides: Fast Synthesis, Exfoliation and Electrochemical Activity in Overall Water Splitting at Alkaline pH
<p>Dataset for the article "High Entropy 2D Metals Sulfides: Fast Synthesis, Exfoliation and Electrochemical Activity in Overall Water Splitting at Alkaline pH"</p>
Transparent TiO2 nanotubes supporting silver sulfide for photoelectrochemical water splitting
<p>The following dataset contains research data that is the basis of the research article:</p> <p>"Transparent TiO2 nanotubes supporting silver sulfide for photoelectrochemical water splitting"</p> <p>Contents of the package are the following:</p> <p>a) Experimental results of impedance spectra recorded for fTiNT and gTiNT</p> <p>b) Experimental results of UV-vis absorbance for Ag2S-coated and non-coated fTiNT, and gTiNT </p> <p>c) Cyclic voltammetry carried out in 0.5 M Na2SO4 and Raman spectra for 25-Ag2S/gTiNT electrode </p> <p>d) Cyclic voltammetry carried out in 0.1 M NaOH and Raman spectra for 45-Ag2S/gTiNT electrode </p> <p> </p>
A fresh thermodynamic outlook of hydrogen production by water splitting from an exergy-based perspective
<p>The upload files is the origin data and calculation procedure for the article titled "A fresh thermodynamic outlook of hydrogen production by water splitting from an exergy-based perspective".</p>
Data file for the paper: Jun Wu, Peng Li, Andres Parra-Puerto, Shuang Wu, Xiaoqian Lin, Denis Kramer, Shengli Chen, Anthony Kucernak, "Controllable heteroatom doping effects of CrxCo2-xP Nanoparticles: A Robust Electrocatalyst for Overall Water Splitting in Alkaline Solutions"
<p>The data in this spreadsheet was used to produce the figures in the paper<br> <br> Authors:Jun Wu,Peng Li,Andres Parra-Puerto,Shuang Wu,Xiaoqian Lin,Denis Kramer,Shengli Chen,Anthony Kucernak</p> <p>Title:Controllable heteroatom doping effects of CrxCo2-xP Nanoparticles: A Robust Electrocatalyst for Overall Water Splitting in Alkaline Solutions</p> <p>Journal:Acs Applied Materials & Interfaces<br> <br> DOI: 10.1021/acsami.0c10441<br> <br> Please cite the above reference if you wish to use this data<br> <br> DOI of this data:10.5281/zenodo.4067857<br> <br> <br> <br> <br> <br> </p>
Data set for "Photoelectrochemical Schlenk cell functionalization of multi-junction water-splitting photoelectrodes"
<p>The data set is organised along the figures of the publication.</p> <ul> <li>The '.ers' and '.ert' files are reflection anisotropy spectra and and transients, respectively, in the native format of Laytec's EpiRAS.</li> <li>The '.xy' files are XPS data in the export format of SpecsLab Prodigy.</li> <li>The electrochemistry data is in the '.txt' file format "Zahner Online Display data file version: 2" exported from the Zahner ZenniumPro potentiostat. Currents are absolute currents, For sample areas see the additional file description.</li> </ul>
Heteroepitaxial MOF-on-MOF Photocatalyst for Solar-Driven Water Splitting
<p>Relevant data for publication with doi: 10.1021/acsnano.4c03442</p> <p> </p>
Solar Hydrogen Production By Photoelectrochemical Water Splitting "Freilandversuch"
Open the record for dataset details and reuse information.
Si3N4 membrane breaks in ultrahigh vacuum during operando NEXAFS in solar hydrogen water splitting micro electrochemical cell
<p>This video was recorded 19 April 2012 during operando photoelectrochemical water splitting in a micro specroelectrochemical x-ray cell during NEXAFS beamtime at the Advanced Light Source in Berkeley. The window broke in the UHV chamber, when the potential was reversed with the potentiostat from 900 mV to lower potentials. Fortunately, we had already the light O1s x-ray absorption spectra in light on/off mode for the potentials up to 900 mV.</p>
Experimental and Computational data related to research on ``Investigating the Electronic Structure of Prospective Water-splitting Oxide BaCe0.25Mn0.75O3−δ Before and After Thermal Reduction''
<p>Data files and gnuplot scripts for the figures included in the submission titled ``<strong>Investigating the Electronic Structure of Prospective Water-splitting Oxide BaCe<sub>0.25</sub>Mn<sub>0.75</sub>O<sub>3−δ </sub>Before and After Thermal Reduction''</strong></p>
Two-dimensional arsenene/HfNBr van der Waals Heterojunction as water splitting photocatalyst: first-principles predictions
<p>Please see ref:</p> <p> </p> <p>(under review)</p>
Solar Water Splitting with Perovskite/Silicon Tandem Cell
<p>Linear sweep voltammetry measurements for Pt nanoclusters</p>
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