Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution
The oxygen evolution reaction (OER) is involved in various renewable energy systems, such as water‐splitting cells and metal–air batteries. Ni‐Fe layered double hydroxides (LDHs) have been reported as promising OER electrocatalysts in alkaline electrolytes. The rational design of advanced nanostruct...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2020
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| Online Access: | https://hdl.handle.net/10356/137733 |
| _version_ | 1826112917073821696 |
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| author | Yu, Le Yang, Jing Fan Guan, Bu Yuan Lu, Yan Lou, David Xiong Wen |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Yu, Le Yang, Jing Fan Guan, Bu Yuan Lu, Yan Lou, David Xiong Wen |
| author_sort | Yu, Le |
| collection | NTU |
| description | The oxygen evolution reaction (OER) is involved in various renewable energy systems, such as water‐splitting cells and metal–air batteries. Ni‐Fe layered double hydroxides (LDHs) have been reported as promising OER electrocatalysts in alkaline electrolytes. The rational design of advanced nanostructures for Ni‐Fe LDHs is highly desirable to optimize their electrocatalytic performance. Herein, we report a facile self‐templated strategy for the synthesis of novel hierarchical hollow nanoprisms composed of ultrathin Ni‐Fe LDH nanosheets. Tetragonal nanoprisms of nickel precursors were first synthesized as the self‐sacrificing template. Afterwards, these Ni precursors were consumed during the hydrolysis of iron(II) sulfate for the simultaneous growth of a layer of Ni‐Fe LDH nanosheets on the surface. The resultant Ni‐Fe LDH hollow prisms with large surface areas manifest high electrocatalytic activity towards the OER with low overpotential, small Tafel slope, and remarkable stability. |
| first_indexed | 2024-10-01T03:14:57Z |
| format | Journal Article |
| id | ntu-10356/137733 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:14:57Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1377332023-12-29T06:46:21Z Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution Yu, Le Yang, Jing Fan Guan, Bu Yuan Lu, Yan Lou, David Xiong Wen School of Chemical and Biomedical Engineering Science::Chemistry Iron Layered Double Hydroxides The oxygen evolution reaction (OER) is involved in various renewable energy systems, such as water‐splitting cells and metal–air batteries. Ni‐Fe layered double hydroxides (LDHs) have been reported as promising OER electrocatalysts in alkaline electrolytes. The rational design of advanced nanostructures for Ni‐Fe LDHs is highly desirable to optimize their electrocatalytic performance. Herein, we report a facile self‐templated strategy for the synthesis of novel hierarchical hollow nanoprisms composed of ultrathin Ni‐Fe LDH nanosheets. Tetragonal nanoprisms of nickel precursors were first synthesized as the self‐sacrificing template. Afterwards, these Ni precursors were consumed during the hydrolysis of iron(II) sulfate for the simultaneous growth of a layer of Ni‐Fe LDH nanosheets on the surface. The resultant Ni‐Fe LDH hollow prisms with large surface areas manifest high electrocatalytic activity towards the OER with low overpotential, small Tafel slope, and remarkable stability. NRF (Natl Research Foundation, S’pore) 2020-04-13T02:33:11Z 2020-04-13T02:33:11Z 2017 Journal Article Yu, L., Yang, J. F., Guan, B. Y., Lu, Y., & Lou, D. X. W. (2018). Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution. Angewandte Chemie International Edition, 57(1), 172-176. doi:10.1002/anie.201710877 1433-7851 https://hdl.handle.net/10356/137733 10.1002/anie.201710877 29178355 2-s2.0-85039059116 1 57 172 176 en Angewandte Chemie International Edition © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. application/pdf |
| spellingShingle | Science::Chemistry Iron Layered Double Hydroxides Yu, Le Yang, Jing Fan Guan, Bu Yuan Lu, Yan Lou, David Xiong Wen Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title | Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title_full | Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title_fullStr | Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title_full_unstemmed | Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title_short | Hierarchical hollow nanoprisms based on ultrathin Ni‐Fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| title_sort | hierarchical hollow nanoprisms based on ultrathin ni fe layered double hydroxide nanosheets with enhanced electrocatalytic activity towards oxygen evolution |
| topic | Science::Chemistry Iron Layered Double Hydroxides |
| url | https://hdl.handle.net/10356/137733 |
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