Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis
Abstract The success of proton exchange membrane water electrolysis (PEMWE) depends on active and robust electrocatalysts to facilitate oxygen evolution reaction (OER). Heteroatom-doped-RuOx has emerged as a promising electrocatalysts because heteroatoms suppress lattice oxygen participation in the...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-55910-1 |
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| author | Yeji Park Ho Yeon Jang Tae Kyung Lee Taekyung Kim Doyeop Kim Dongjin Kim Hionsuck Baik Jinwon Choi Taehyun Kwon Sung Jong Yoo Seoin Back Kwangyeol Lee |
| author_facet | Yeji Park Ho Yeon Jang Tae Kyung Lee Taekyung Kim Doyeop Kim Dongjin Kim Hionsuck Baik Jinwon Choi Taehyun Kwon Sung Jong Yoo Seoin Back Kwangyeol Lee |
| author_sort | Yeji Park |
| collection | DOAJ |
| description | Abstract The success of proton exchange membrane water electrolysis (PEMWE) depends on active and robust electrocatalysts to facilitate oxygen evolution reaction (OER). Heteroatom-doped-RuOx has emerged as a promising electrocatalysts because heteroatoms suppress lattice oxygen participation in the OER, thereby preventing the destabilization of surface Ru and catalyst degradation. However, identifying suitable heteroatoms and achieving their atomic-scale coupling with Ru atoms are nontrivial tasks. Herein, to steer the reaction pathway away from the involvement of lattice oxygen, we integrate OER-active Ir atoms into the RuO2 matrix, which maximizes the synergy between stable Ru and active Ir centers, by leveraging the changeable growth behavior of Ru/Ir atoms on lattice parameter-modulated templates. In PEMWE, the resulting (RuIr)O2/C electrocatalysts demonstrate notable current density of 4.96 A cm−2 and mass activity of 19.84 A mgRu+Ir −1 at 2.0 V. In situ spectroscopic analysis and computational calculations highlight the importance of the synergistic coexistence of Ru/Ir-dual-OER-active sites for mitigating Ru dissolution via the optimization of the binding energy with oxygen intermediates and stabilization of Ru sites. |
| format | Article |
| id | doaj-art-63ac0bd129cf4f6a893594afe18a965c |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-63ac0bd129cf4f6a893594afe18a965c2025-01-12T12:31:25ZengNature PortfolioNature Communications2041-17232025-01-0116111510.1038/s41467-025-55910-1Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysisYeji Park0Ho Yeon Jang1Tae Kyung Lee2Taekyung Kim3Doyeop Kim4Dongjin Kim5Hionsuck Baik6Jinwon Choi7Taehyun Kwon8Sung Jong Yoo9Seoin Back10Kwangyeol Lee11Department of Chemistry and Research Institute for Natural Sciences, Korea UniversityDepartment of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang UniversityHydrogen Fuel Cell Research Center, Korea Institute of Science and TechnologyKorea Basic Science Institute (KBSI)Department of Chemistry and Research Institute for Natural Sciences, Korea UniversityDepartment of Chemistry and Research Institute for Natural Sciences, Korea UniversityKorea Basic Science Institute (KBSI)Department of Chemistry, Incheon National UniversityDepartment of Chemistry, Incheon National UniversityHydrogen Fuel Cell Research Center, Korea Institute of Science and TechnologyDepartment of Chemical and Biomolecular Engineering, Institute of Emergent Materials, Sogang UniversityDepartment of Chemistry and Research Institute for Natural Sciences, Korea UniversityAbstract The success of proton exchange membrane water electrolysis (PEMWE) depends on active and robust electrocatalysts to facilitate oxygen evolution reaction (OER). Heteroatom-doped-RuOx has emerged as a promising electrocatalysts because heteroatoms suppress lattice oxygen participation in the OER, thereby preventing the destabilization of surface Ru and catalyst degradation. However, identifying suitable heteroatoms and achieving their atomic-scale coupling with Ru atoms are nontrivial tasks. Herein, to steer the reaction pathway away from the involvement of lattice oxygen, we integrate OER-active Ir atoms into the RuO2 matrix, which maximizes the synergy between stable Ru and active Ir centers, by leveraging the changeable growth behavior of Ru/Ir atoms on lattice parameter-modulated templates. In PEMWE, the resulting (RuIr)O2/C electrocatalysts demonstrate notable current density of 4.96 A cm−2 and mass activity of 19.84 A mgRu+Ir −1 at 2.0 V. In situ spectroscopic analysis and computational calculations highlight the importance of the synergistic coexistence of Ru/Ir-dual-OER-active sites for mitigating Ru dissolution via the optimization of the binding energy with oxygen intermediates and stabilization of Ru sites.https://doi.org/10.1038/s41467-025-55910-1 |
| spellingShingle | Yeji Park Ho Yeon Jang Tae Kyung Lee Taekyung Kim Doyeop Kim Dongjin Kim Hionsuck Baik Jinwon Choi Taehyun Kwon Sung Jong Yoo Seoin Back Kwangyeol Lee Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis Nature Communications |
| title | Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis |
| title_full | Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis |
| title_fullStr | Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis |
| title_full_unstemmed | Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis |
| title_short | Atomic-level Ru-Ir mixing in rutile-type (RuIr)O2 for efficient and durable oxygen evolution catalysis |
| title_sort | atomic level ru ir mixing in rutile type ruir o2 for efficient and durable oxygen evolution catalysis |
| url | https://doi.org/10.1038/s41467-025-55910-1 |
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