Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting
The conventional thermal transformation of metal–organic frameworks (MOFs) for electrocatalysis requires high temperature, an inert atmosphere, and long duration that result in severe aggregation of metal particles and non-uniform porous structures. Herein, a precise and inexpensive laser-induced an...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/154125 |
| _version_ | 1811683436189974528 |
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| author | Tang, Yu-Jia Zheng, Han Wang, Yu Zhang, Wang Zhou, Kun |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tang, Yu-Jia Zheng, Han Wang, Yu Zhang, Wang Zhou, Kun |
| author_sort | Tang, Yu-Jia |
| collection | NTU |
| description | The conventional thermal transformation of metal–organic frameworks (MOFs) for electrocatalysis requires high temperature, an inert atmosphere, and long duration that result in severe aggregation of metal particles and non-uniform porous structures. Herein, a precise and inexpensive laser-induced annealing (LIA) strategy, which eliminates particle aggregation and rapidly generates uniform structures with a high exposure of active sites, is introduced to carbonize MOFs on conductive substrates under ambient conditions within a few minutes. By systematically considering 8 substrates and 12 MOFs, a series of LIA-MOF/substrate devices with controllable sizes and good flexibility are successfully obtained. These LIA-MOF/substrate devices can directly serve as working electrodes. Remarkably, LIA-MIL-101(Fe) on nickel foam exhibits an ultralow overpotential of 225 mV at a current density of 50 mA cm−2 and excellent stability over 50 h for facilitating the oxygen evolution reaction, outperforming most recently reported transition-metal-based electrocatalysts and commercial RuO2. Physical characterizations and theoretical calculations evidence that the high activity of LIA-MIL-101(Fe) arises from the favorable adsorption of intermediates at its Ni-doped Fe3O4 overlayer that is formed during the laser treatment. Moreover, the LIA-MOF/substrate devices are assembled for overall water splitting. The proposed LIA strategy demonstrates a cost-effective route for manufacturing scalable energy storage and conversion devices. |
| first_indexed | 2024-10-01T04:12:42Z |
| format | Journal Article |
| id | ntu-10356/154125 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:12:42Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1541252021-12-18T20:12:09Z Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting Tang, Yu-Jia Zheng, Han Wang, Yu Zhang, Wang Zhou, Kun School of Mechanical and Aerospace Engineering Singapore Centre for 3D Printing Nanyang Environment and Water Research Institute Engineering::Mechanical engineering Metal-Organic Frameworks Laser-Induced Annealing The conventional thermal transformation of metal–organic frameworks (MOFs) for electrocatalysis requires high temperature, an inert atmosphere, and long duration that result in severe aggregation of metal particles and non-uniform porous structures. Herein, a precise and inexpensive laser-induced annealing (LIA) strategy, which eliminates particle aggregation and rapidly generates uniform structures with a high exposure of active sites, is introduced to carbonize MOFs on conductive substrates under ambient conditions within a few minutes. By systematically considering 8 substrates and 12 MOFs, a series of LIA-MOF/substrate devices with controllable sizes and good flexibility are successfully obtained. These LIA-MOF/substrate devices can directly serve as working electrodes. Remarkably, LIA-MIL-101(Fe) on nickel foam exhibits an ultralow overpotential of 225 mV at a current density of 50 mA cm−2 and excellent stability over 50 h for facilitating the oxygen evolution reaction, outperforming most recently reported transition-metal-based electrocatalysts and commercial RuO2. Physical characterizations and theoretical calculations evidence that the high activity of LIA-MIL-101(Fe) arises from the favorable adsorption of intermediates at its Ni-doped Fe3O4 overlayer that is formed during the laser treatment. Moreover, the LIA-MOF/substrate devices are assembled for overall water splitting. The proposed LIA strategy demonstrates a cost-effective route for manufacturing scalable energy storage and conversion devices. Nanyang Technological University National Research Foundation (NRF) Accepted version This research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme through the Marine and Offshore Program, and the startup foundation for introducing talent of NUIST (No. 1521622101008). H.Z., Y.W., and K.Z. also acknowledge the financial support from the Nanyang Environment and Water Research Institute (Core Fund), Nanyang Technological University, Singapore. 2021-12-15T06:44:09Z 2021-12-15T06:44:09Z 2021 Journal Article Tang, Y., Zheng, H., Wang, Y., Zhang, W. & Zhou, K. (2021). Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting. Advanced Functional Materials, 31(31), 2102648-. https://dx.doi.org/10.1002/adfm.202102648 1616-301X https://hdl.handle.net/10356/154125 10.1002/adfm.202102648 2-s2.0-85106677568 31 31 2102648 en 1521622101008 Advanced Functional Materials This is the peer reviewed version of the following article: Tang, Y., Zheng, H., Wang, Y., Zhang, W. & Zhou, K. (2021). Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting. Advanced Functional Materials, 31(31), 2102648-, which has been published in final form at https://doi.org/10.1002/adfm.202102648. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. application/pdf |
| spellingShingle | Engineering::Mechanical engineering Metal-Organic Frameworks Laser-Induced Annealing Tang, Yu-Jia Zheng, Han Wang, Yu Zhang, Wang Zhou, Kun Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title | Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title_full | Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title_fullStr | Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title_full_unstemmed | Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title_short | Laser-induced annealing of metal–organic frameworks on conductive substrates for electrochemical water splitting |
| title_sort | laser induced annealing of metal organic frameworks on conductive substrates for electrochemical water splitting |
| topic | Engineering::Mechanical engineering Metal-Organic Frameworks Laser-Induced Annealing |
| url | https://hdl.handle.net/10356/154125 |
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