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Título: | Sustainable oxygen evolution electrocatalysis in aqueous 1 MH2SO4 with earth abundant nanostructured Co3O4 |
Autor: | Yu, Jiahao; Garcés-Pineda, Felipe A.; González-Cobos, Jesús; Peña-Díaz, Marina CSIC ORCID; Rogero, Celia CSIC ORCID; Giménez, Sixto; Spadaro, Maria Chiara CSIC ORCID; Arbiol, Jordi CSIC ORCID CVN; Barja, Sara CSIC ORCID; Galán-Mascarós, José Ramón CSIC | Fecha de publicación: | 2022 | Editor: | Springer Nature | Citación: | Nature Communications 13: 4341 (2022) | Resumen: | Earth-abundant electrocatalysts for the oxygen evolution reaction (OER) able to work in acidic working conditions are elusive. While many first-row transition metal oxides are competitive in alkaline media, most of them just dissolve or become inactive at high proton concentrations where hydrogen evolution is preferred. Only noble-metal catalysts, such as IrO2, are fast and stable enough in acidic media. Herein, we report the excellent activity and long-term stability of Co3O4-based anodes in 1 M H2SO4 (pH 0.1) when processed in a partially hydrophobic carbon-based protecting matrix. These Co3O4@C composites reliably drive O2 evolution a 10 mA cm–2 current density for >40 h without appearance of performance fatigue, successfully passing benchmarking protocols without incorporating noble metals. Our strategy opens an alternative venue towards fast, energy efficient acid-media water oxidation electrodes. | Versión del editor: | https://doi.org/10.1038/s41467-022-32024-6 | URI: | http://hdl.handle.net/10261/284586 | DOI: | 10.1038/s41467-022-32024-6 | E-ISSN: | 2041-1723 | Referencias: | Yu, Jiahao; Garcés-Pineda, Felipe A.; González-Cobos, Jesús; Peña-Díaz, Marina; Rogero, Celia; Giménez, Sixto; Spadaro, Maria Chiara; Arbiol, Jordi; Barja, Sara; Galán-Mascarós, José Ramón. Author Correction: Sustainable oxygen evolution electrocatalysis in aqueous 1 M H2SO4 with earth abundant nanostructured Co3O4. https://doi.org/10.1038/s41467-022-32399-6. http://hdl.handle.net/10261/297099 |
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