A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution
Layered double hydroxides have been studied in various research fields such as electrocatalysis. However, there are still needs to improve their electrochemical performance by designing and fabricating heterostructures with desired crystal architectures as well as tailorable compositions for electro...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/142031 |
| _version_ | 1826119053144489984 |
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| author | Huang, Tan Moon, Seung Ki Lee, Jong-Min |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Huang, Tan Moon, Seung Ki Lee, Jong-Min |
| author_sort | Huang, Tan |
| collection | NTU |
| description | Layered double hydroxides have been studied in various research fields such as electrocatalysis. However, there are still needs to improve their electrochemical performance by designing and fabricating heterostructures with desired crystal architectures as well as tailorable compositions for electrocatalysis. Herein, for the first time a strategy is reported for the synthesis of binary hybrid hydroxide microstructures which are wrapped by few-layer carbon with iridium doping. The synthesized nickel hydroxides enable the epitaxial overgrowth of cobalt hydroxides due to their similar crystal lattice, resulting in the formation of hybrid NiCo layered double hydroxides heterostructures. Moreover, the NiCo layered double hydroxides are coated by few-layer carbon, which is eventually doped by iridium. Our results show that NiCo-Ir hybrid microarchitecture with tunable compositions display excellent electrocatalytic behaviors towards the oxygen evolution reaction, due to their microstructural advantages with thin carbon layers and electronic interaction of iridium/hydroxides. These results validate the potential applications of the NiCo-Ir hybrid microarchitecture in electrocatalysis. |
| first_indexed | 2024-10-01T04:53:45Z |
| format | Journal Article |
| id | ntu-10356/142031 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:53:45Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1420312021-01-08T07:46:24Z A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution Huang, Tan Moon, Seung Ki Lee, Jong-Min School of Chemical and Biomedical Engineering School of Mechanical and Aerospace Engineering Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Engineering::Chemical engineering Layered Double Hydroxides Epitaxial Growth Layered double hydroxides have been studied in various research fields such as electrocatalysis. However, there are still needs to improve their electrochemical performance by designing and fabricating heterostructures with desired crystal architectures as well as tailorable compositions for electrocatalysis. Herein, for the first time a strategy is reported for the synthesis of binary hybrid hydroxide microstructures which are wrapped by few-layer carbon with iridium doping. The synthesized nickel hydroxides enable the epitaxial overgrowth of cobalt hydroxides due to their similar crystal lattice, resulting in the formation of hybrid NiCo layered double hydroxides heterostructures. Moreover, the NiCo layered double hydroxides are coated by few-layer carbon, which is eventually doped by iridium. Our results show that NiCo-Ir hybrid microarchitecture with tunable compositions display excellent electrocatalytic behaviors towards the oxygen evolution reaction, due to their microstructural advantages with thin carbon layers and electronic interaction of iridium/hydroxides. These results validate the potential applications of the NiCo-Ir hybrid microarchitecture in electrocatalysis. MOE (Min. of Education, S’pore) 2020-06-15T03:41:31Z 2020-06-15T03:41:31Z 2018 Journal Article Huang, T., Moon, S. K., & Lee, J.-M. (2019). A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution. Electrochimica Acta, 296, 590-597. doi:10.1016/j.electacta.2018.11.094 0013-4686 https://hdl.handle.net/10356/142031 10.1016/j.electacta.2018.11.094 2-s2.0-85057150144 296 590 597 en Electrochimica Acta © 2018 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Layered Double Hydroxides Epitaxial Growth Huang, Tan Moon, Seung Ki Lee, Jong-Min A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title | A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title_full | A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title_fullStr | A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title_full_unstemmed | A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title_short | A heterostructure of layered double hydroxide wrapped in few-layer carbon with iridium doping for efficient oxygen evolution |
| title_sort | heterostructure of layered double hydroxide wrapped in few layer carbon with iridium doping for efficient oxygen evolution |
| topic | Engineering::Chemical engineering Layered Double Hydroxides Epitaxial Growth |
| url | https://hdl.handle.net/10356/142031 |
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