Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution
Abstract The production of green hydrogen in water electrolyzers is limited by the oxygen evolution reaction (OER). State-of-the-art electrocatalysts are based on Ir. Ru electrocatalysts are a suitable alternative provided their performance is improved. Here we show that low-Ru-content pyrochlores (...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-04-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-37665-9 |
| _version_ | 1797845898036772864 |
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| author | Dmitry Galyamin Jorge Torrero Isabel Rodríguez Manuel J. Kolb Pilar Ferrer Laura Pascual Mohamed Abdel Salam Diego Gianolio Verónica Celorrio Mohamed Mokhtar Daniel Garcia Sanchez Aldo Saul Gago Kaspar Andreas Friedrich Miguel A. Peña José Antonio Alonso Federico Calle-Vallejo María Retuerto Sergio Rojas |
| author_facet | Dmitry Galyamin Jorge Torrero Isabel Rodríguez Manuel J. Kolb Pilar Ferrer Laura Pascual Mohamed Abdel Salam Diego Gianolio Verónica Celorrio Mohamed Mokhtar Daniel Garcia Sanchez Aldo Saul Gago Kaspar Andreas Friedrich Miguel A. Peña José Antonio Alonso Federico Calle-Vallejo María Retuerto Sergio Rojas |
| author_sort | Dmitry Galyamin |
| collection | DOAJ |
| description | Abstract The production of green hydrogen in water electrolyzers is limited by the oxygen evolution reaction (OER). State-of-the-art electrocatalysts are based on Ir. Ru electrocatalysts are a suitable alternative provided their performance is improved. Here we show that low-Ru-content pyrochlores (R2MnRuO7, R = Y, Tb and Dy) display high activity and durability for the OER in acidic media. Y2MnRuO7 is the most stable catalyst, displaying 1.5 V at 10 mA cm−2 for 40 h, or 5000 cycles up to 1.7 V. Computational and experimental results show that the high performance is owed to Ru sites embedded in RuMnOx surface layers. A water electrolyser with Y2MnRuO7 (with only 0.2 mgRu cm−2) reaches 1 A cm−2 at 1.75 V, remaining stable at 200 mA cm−2 for more than 24 h. These results encourage further investigation on Ru catalysts in which a partial replacement of Ru by inexpensive cations can enhance the OER performance. |
| first_indexed | 2024-04-09T17:46:25Z |
| format | Article |
| id | doaj.art-bfa022e164114ec080a7bea78f2f215c |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-04-09T17:46:25Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-bfa022e164114ec080a7bea78f2f215c2023-04-16T11:19:18ZengNature PortfolioNature Communications2041-17232023-04-0114111210.1038/s41467-023-37665-9Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolutionDmitry Galyamin0Jorge Torrero1Isabel Rodríguez2Manuel J. Kolb3Pilar Ferrer4Laura Pascual5Mohamed Abdel Salam6Diego Gianolio7Verónica Celorrio8Mohamed Mokhtar9Daniel Garcia Sanchez10Aldo Saul Gago11Kaspar Andreas Friedrich12Miguel A. Peña13José Antonio Alonso14Federico Calle-Vallejo15María Retuerto16Sergio Rojas17Grupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Institute of Engineering Thermodynamics/Electrochemical Energy Technology, German Aerospace Center (DLR)Grupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de BarcelonaDiamond Light Source, Harwell Science and Innovation CampusInstituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Chemistry Department, Faculty of Science, King Abdulaziz UniversityDiamond Light Source, Harwell Science and Innovation CampusDiamond Light Source, Harwell Science and Innovation CampusChemistry Department, Faculty of Science, King Abdulaziz UniversityInstitute of Engineering Thermodynamics/Electrochemical Energy Technology, German Aerospace Center (DLR)Institute of Engineering Thermodynamics/Electrochemical Energy Technology, German Aerospace Center (DLR)Institute of Engineering Thermodynamics/Electrochemical Energy Technology, German Aerospace Center (DLR)Grupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Instituto de Ciencia de Materiales de Madrid, CSIC. C/Sor Juana Inés de la Cruz 3Departament de Ciència de Materials i Química Fisica & Institut de Química Teòrica i Computacional (IQTCUB), Universitat de BarcelonaGrupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Grupo de Energía y Química Sostenibles, Instituto de Catálisis y Petroleoquímica, CSIC. C/Marie Curie 2Abstract The production of green hydrogen in water electrolyzers is limited by the oxygen evolution reaction (OER). State-of-the-art electrocatalysts are based on Ir. Ru electrocatalysts are a suitable alternative provided their performance is improved. Here we show that low-Ru-content pyrochlores (R2MnRuO7, R = Y, Tb and Dy) display high activity and durability for the OER in acidic media. Y2MnRuO7 is the most stable catalyst, displaying 1.5 V at 10 mA cm−2 for 40 h, or 5000 cycles up to 1.7 V. Computational and experimental results show that the high performance is owed to Ru sites embedded in RuMnOx surface layers. A water electrolyser with Y2MnRuO7 (with only 0.2 mgRu cm−2) reaches 1 A cm−2 at 1.75 V, remaining stable at 200 mA cm−2 for more than 24 h. These results encourage further investigation on Ru catalysts in which a partial replacement of Ru by inexpensive cations can enhance the OER performance.https://doi.org/10.1038/s41467-023-37665-9 |
| spellingShingle | Dmitry Galyamin Jorge Torrero Isabel Rodríguez Manuel J. Kolb Pilar Ferrer Laura Pascual Mohamed Abdel Salam Diego Gianolio Verónica Celorrio Mohamed Mokhtar Daniel Garcia Sanchez Aldo Saul Gago Kaspar Andreas Friedrich Miguel A. Peña José Antonio Alonso Federico Calle-Vallejo María Retuerto Sergio Rojas Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution Nature Communications |
| title | Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution |
| title_full | Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution |
| title_fullStr | Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution |
| title_full_unstemmed | Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution |
| title_short | Active and durable R2MnRuO7 pyrochlores with low Ru content for acidic oxygen evolution |
| title_sort | active and durable r2mnruo7 pyrochlores with low ru content for acidic oxygen evolution |
| url | https://doi.org/10.1038/s41467-023-37665-9 |
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