Preparation and characterization of supported Ru x Ir (1-x) O 2 nano-oxides using a modified polyol synthesis assisted by microwave activation for energy storage applications
| Autor: | Benoît Guenot, Christophe Coutanceau, Marc Cretin, Stève Baranton, Claude Lamy, Thomas Audichon |
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| Přispěvatelé: | Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers-Institut de Chimie du CNRS (INC), Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Passivation Inorganic chemistry Nanoparticle chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences 7. Clean energy Catalysis symbols.namesake X-ray photoelectron spectroscopy Nano [CHIM]Chemical Sciences Iridium ComputingMilieux_MISCELLANEOUS General Environmental Science Process Chemistry and Technology Oxygen evolution [CHIM.CATA]Chemical Sciences/Catalysis 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry symbols 0210 nano-technology Raman spectroscopy |
| Zdroj: | Applied Catalysis B: Environmental Applied Catalysis B: Environmental, Elsevier, 2017, 200, pp.493-502. ⟨10.1016/j.apcatb.2016.07.048⟩ |
| ISSN: | 0926-3373 |
| DOI: | 10.1016/j.apcatb.2016.07.048⟩ |
| Popis: | A simple and soft synthesis method, namely the polyol route, is proposed to synthesize RuxIr(1-x)O2 mixed-oxide nanoparticles deposited on a high surface area carbon support, with controlled size and size distribution, and composition. The samples are characterized by TGA, XRD, TEM, XPS and Raman analyses. Their behaviors as supercapacitors and catalysts for oxygen evolution reaction (OER) have been investigated in 0.5 M H2SO4 medium. It was demonstrated that pure RuO2 presented the highest supercapacitive property, and that addition of iridium leads to decrease this property. On the other hand, pure RuO2 presented the lower onset potential for OER, but tended to be passivated as the potential was increased. Addition of iridium led to limit or to avoid the catalyst passivation and to increase the activity at high potential, but also to shift positively the OER onset potential. |
| Databáze: | OpenAIRE |
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