Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution
Rational surface engineering of metal–organic frameworks (MOFs) provide potential opportunities to address the sluggish kinetics of oxygen evolution reaction (OER). However, the development of MOF-based materials with low overpotentials remains a great challenge. Herein, a post-synthesis strategy to...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/170227 |
| _version_ | 1826122078243258368 |
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| author | Zhang, Wang Niu, Menghao Yu, Jing Li, Shiqi Wang, Yu Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhang, Wang Niu, Menghao Yu, Jing Li, Shiqi Wang, Yu Zhou, Kun |
| author_sort | Zhang, Wang |
| collection | NTU |
| description | Rational surface engineering of metal–organic frameworks (MOFs) provide potential opportunities to address the sluggish kinetics of oxygen evolution reaction (OER). However, the development of MOF-based materials with low overpotentials remains a great challenge. Herein, a post-synthesis strategy to prepare highly efficient MOF-based pre-electrocatalysts via all-solid-phase mechanochemistry is demonstrated. The surface of a Fe-based MOF (MIL-53) can be reconstructed and anchored with atomically dispersed Ni/Co sites. As expected, the optimized M-NiA-CoN exhibits a very low overpotential of 180 mV at 10 mA cm−2 and a small Tafel slope of 41 mV dec−1 in 1 m KOH electrolyte. The superior electrocatalytic OER activity is mainly due to the formation of surface Fe O Ni/Co bonding. Furthermore, density functional theory calculations reveal that the transformation from *OH to *O is the rate-determining step and the electrocatalytic OER activity trend at different metal sites is Co > Ni≈Fe. |
| first_indexed | 2024-10-01T05:42:55Z |
| format | Journal Article |
| id | ntu-10356/170227 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:42:55Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1702272023-09-04T02:08:26Z Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution Zhang, Wang Niu, Menghao Yu, Jing Li, Shiqi Wang, Yu Zhou, Kun School of Mechanical and Aerospace Engineering Nanyang Environment and Water Research Institute Engineering::Mechanical engineering Engineering::Materials Mechanochemistry Metal–Organic Frameworks Rational surface engineering of metal–organic frameworks (MOFs) provide potential opportunities to address the sluggish kinetics of oxygen evolution reaction (OER). However, the development of MOF-based materials with low overpotentials remains a great challenge. Herein, a post-synthesis strategy to prepare highly efficient MOF-based pre-electrocatalysts via all-solid-phase mechanochemistry is demonstrated. The surface of a Fe-based MOF (MIL-53) can be reconstructed and anchored with atomically dispersed Ni/Co sites. As expected, the optimized M-NiA-CoN exhibits a very low overpotential of 180 mV at 10 mA cm−2 and a small Tafel slope of 41 mV dec−1 in 1 m KOH electrolyte. The superior electrocatalytic OER activity is mainly due to the formation of surface Fe O Ni/Co bonding. Furthermore, density functional theory calculations reveal that the transformation from *OH to *O is the rate-determining step and the electrocatalytic OER activity trend at different metal sites is Co > Ni≈Fe. This work was supported by the National Natural Science Foundation of China (22075248 and 22203044), and the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang (2020R01002). 2023-09-04T02:08:26Z 2023-09-04T02:08:26Z 2023 Journal Article Zhang, W., Niu, M., Yu, J., Li, S., Wang, Y. & Zhou, K. (2023). Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution. Advanced Functional Materials, 2302014-. https://dx.doi.org/10.1002/adfm.202302014 1616-301X https://hdl.handle.net/10356/170227 10.1002/adfm.202302014 2-s2.0-85160221451 2302014 en Advanced Functional Materials © 2023 Wiley-VCH GmbH. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Engineering::Materials Mechanochemistry Metal–Organic Frameworks Zhang, Wang Niu, Menghao Yu, Jing Li, Shiqi Wang, Yu Zhou, Kun Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title | Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title_full | Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title_fullStr | Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title_full_unstemmed | Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title_short | Mechanochemical post-synthesis of metal–organic framework-based pre-electrocatalysts with surface Fe O Ni/Co bonding for highly efficient oxygen evolution |
| title_sort | mechanochemical post synthesis of metal organic framework based pre electrocatalysts with surface fe o ni co bonding for highly efficient oxygen evolution |
| topic | Engineering::Mechanical engineering Engineering::Materials Mechanochemistry Metal–Organic Frameworks |
| url | https://hdl.handle.net/10356/170227 |
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