Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis
Highly efficient, cost-effective, and durable electrocatalysts, capable of accelerating sluggish reaction kinetics and attaining high performance, are essential for developing sustainable energy technologies but remain a great challenge. Here, we leverage a facile heterostructure design strategy to...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/179448 |
| _version_ | 1824454325320024064 |
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| author | Prabhu, P. Do, Viet-Hung Yoshida, Takefumi Zhou, Yingtang Ariga-Miwa, Hiroko Kaneko, Takuma Uruga, Tomoya Iwasawa, Yasuhiro Lee, Jong-Min |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Prabhu, P. Do, Viet-Hung Yoshida, Takefumi Zhou, Yingtang Ariga-Miwa, Hiroko Kaneko, Takuma Uruga, Tomoya Iwasawa, Yasuhiro Lee, Jong-Min |
| author_sort | Prabhu, P. |
| collection | NTU |
| description | Highly efficient, cost-effective, and durable electrocatalysts, capable of accelerating sluggish reaction kinetics and attaining high performance, are essential for developing sustainable energy technologies but remain a great challenge. Here, we leverage a facile heterostructure design strategy to construct atomically thin Os@Pd metallenes, with atomic-scale Os nanoclusters of varying geometries confined on the surface layer of the Pd lattice, which exhibit excellent bifunctional properties for catalyzing both hydrogen evolution (HER) and oxygen reduction reactions (ORR). Importantly, Os5%@Pd metallenes manifest a low η10 overpotential of only 11 mV in 1.0 M KOH electrolyte (HER) as well as a highly positive E1/2 potential of 0.92 V in 0.1 M KOH (ORR), along with superior mass activities and electrochemical durability. Theoretical investigations reveal that the strong electron redistribution between Os and Pd elements renders a precise fine-tuning of respective d-band centers, thereby guiding adsorption of hydrogen and oxygen intermediates with an appropriate binding energy for the optimal HER and ORR. |
| first_indexed | 2025-02-19T03:20:31Z |
| format | Journal Article |
| id | ntu-10356/179448 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:20:31Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1794482024-07-31T07:24:48Z Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis Prabhu, P. Do, Viet-Hung Yoshida, Takefumi Zhou, Yingtang Ariga-Miwa, Hiroko Kaneko, Takuma Uruga, Tomoya Iwasawa, Yasuhiro Lee, Jong-Min School of Chemical and Biomedical Engineering Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Chemistry Metallenes Electrocatalyst Highly efficient, cost-effective, and durable electrocatalysts, capable of accelerating sluggish reaction kinetics and attaining high performance, are essential for developing sustainable energy technologies but remain a great challenge. Here, we leverage a facile heterostructure design strategy to construct atomically thin Os@Pd metallenes, with atomic-scale Os nanoclusters of varying geometries confined on the surface layer of the Pd lattice, which exhibit excellent bifunctional properties for catalyzing both hydrogen evolution (HER) and oxygen reduction reactions (ORR). Importantly, Os5%@Pd metallenes manifest a low η10 overpotential of only 11 mV in 1.0 M KOH electrolyte (HER) as well as a highly positive E1/2 potential of 0.92 V in 0.1 M KOH (ORR), along with superior mass activities and electrochemical durability. Theoretical investigations reveal that the strong electron redistribution between Os and Pd elements renders a precise fine-tuning of respective d-band centers, thereby guiding adsorption of hydrogen and oxygen intermediates with an appropriate binding energy for the optimal HER and ORR. Ministry of Education (MOE) This work was supported by the AcRF Tier 1 (grant RG105/19) provided by the Ministry of Education in Singapore. 2024-07-31T07:24:48Z 2024-07-31T07:24:48Z 2024 Journal Article Prabhu, P., Do, V., Yoshida, T., Zhou, Y., Ariga-Miwa, H., Kaneko, T., Uruga, T., Iwasawa, Y. & Lee, J. (2024). Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis. ACS Nano, 18(14), 9942-9957. https://dx.doi.org/10.1021/acsnano.3c10219 1936-0851 https://hdl.handle.net/10356/179448 10.1021/acsnano.3c10219 38552006 2-s2.0-85189242313 14 18 9942 9957 en RG105/19 ACS Nano © 2024 American Chemical Society. All rights reserved. |
| spellingShingle | Chemistry Metallenes Electrocatalyst Prabhu, P. Do, Viet-Hung Yoshida, Takefumi Zhou, Yingtang Ariga-Miwa, Hiroko Kaneko, Takuma Uruga, Tomoya Iwasawa, Yasuhiro Lee, Jong-Min Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title | Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title_full | Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title_fullStr | Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title_full_unstemmed | Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title_short | Subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| title_sort | subnanometric osmium clusters confined on palladium metallenes for enhanced hydrogen evolution and oxygen reduction catalysis |
| topic | Chemistry Metallenes Electrocatalyst |
| url | https://hdl.handle.net/10356/179448 |
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