Título:
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Sustainable oxygen evolution electrocatalysis in aqueous 1 M HSO with earth abundant nanostructured CoO
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Autor/a:
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Yu, Jiahao; Garcés-Pineda, Felipe A.; González-Cobos, Jesús; Peña-Díaz, Marina; Rogero, Celia; Giménez, Sixto; Spadaro, Maria Chiara; Arbiol i Cobos, Jordi; Barja, Sara; Galán-Mascarós, José Ramón
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Abstract:
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Aquest article té una correcció a 10.1038/s41467-022-32399-6 |
Abstract:
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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. |
Fecha de creación:
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12-12-2022 |
Materia(s):
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-Electrocatalysis -Nanoscale materials |
Derechos:
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open access
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https://creativecommons.org/licenses/by/4.0/ |
Tipo de documento:
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Article |
Editor:
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Uri:
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https://ddd.uab.cat/record/264899
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