A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts
Developing highly efficient electrocatalysts for oxygen evolution is vital for renewable and sustainable energy production and storage. Herein, nitrogen-doped carbon encapsulated CoOx-MoC heterostructures are reported for the first time as high performance oxygen evolution electrocatalysts. The comp...
| 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/10356/139029 |
| _version_ | 1826125036033933312 |
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| author | Huang, Tan Chen, Yu Lee, Jong-Min |
| author2 | School of Chemical and Biomedical Engineering |
| author_facet | School of Chemical and Biomedical Engineering Huang, Tan Chen, Yu Lee, Jong-Min |
| author_sort | Huang, Tan |
| collection | NTU |
| description | Developing highly efficient electrocatalysts for oxygen evolution is vital for renewable and sustainable energy production and storage. Herein, nitrogen-doped carbon encapsulated CoOx-MoC heterostructures are reported for the first time as high performance oxygen evolution electrocatalysts. The composition can be tuned by the addition of a Mo source to form a nanowire-assembled hierarchically porous microstructure, which can enlarge the specific surface area, thus exposing more active sites, facilitating mass transport and charge transfer. Moreover, it is demonstrated that the formation of CoOx-MoC heterostructures and the resulting synergistic effect between MoC and Co facilitate the reaction kinetics, leading to significantly improved oxygen evolution reaction (OER) activity with an onset overpotential of merely 290 mV, and a low overpotential of 330 mV to afford a current density of 10 mA cm-2 . The well-constructed microarchitecture contributes to superior long term stability electrochemical behaviors. This work provides a facile strategy via composition tuning and structure optimization for the development of next-generation nonprecious metal-based OER electrocatalysts. |
| first_indexed | 2024-10-01T06:30:10Z |
| format | Journal Article |
| id | ntu-10356/139029 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:30:10Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1390292021-01-10T11:13:43Z A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts Huang, Tan Chen, Yu Lee, Jong-Min School of Chemical and Biomedical Engineering Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) Engineering::Chemical engineering Electrocatalysts Metal-Organic Framework Developing highly efficient electrocatalysts for oxygen evolution is vital for renewable and sustainable energy production and storage. Herein, nitrogen-doped carbon encapsulated CoOx-MoC heterostructures are reported for the first time as high performance oxygen evolution electrocatalysts. The composition can be tuned by the addition of a Mo source to form a nanowire-assembled hierarchically porous microstructure, which can enlarge the specific surface area, thus exposing more active sites, facilitating mass transport and charge transfer. Moreover, it is demonstrated that the formation of CoOx-MoC heterostructures and the resulting synergistic effect between MoC and Co facilitate the reaction kinetics, leading to significantly improved oxygen evolution reaction (OER) activity with an onset overpotential of merely 290 mV, and a low overpotential of 330 mV to afford a current density of 10 mA cm-2 . The well-constructed microarchitecture contributes to superior long term stability electrochemical behaviors. This work provides a facile strategy via composition tuning and structure optimization for the development of next-generation nonprecious metal-based OER electrocatalysts. MOE (Min. of Education, S’pore) 2020-05-15T01:42:39Z 2020-05-15T01:42:39Z 2017 Journal Article Huang, T., Chen, Y., & Lee, J.-M. (2017). A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts. Small, 13(48), 1702753-. doi:10.1002/smll.201702753 1613-6810 https://hdl.handle.net/10356/139029 10.1002/smll.201702753 29119671 2-s2.0-85038441000 48 13 en Small © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Engineering::Chemical engineering Electrocatalysts Metal-Organic Framework Huang, Tan Chen, Yu Lee, Jong-Min A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title | A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title_full | A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title_fullStr | A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title_full_unstemmed | A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title_short | A microribbon hybrid structure of CoOx‐MoC encapsulated in N‐doped carbon nanowire derived from MOF as efficient oxygen evolution electrocatalysts |
| title_sort | microribbon hybrid structure of coox moc encapsulated in n doped carbon nanowire derived from mof as efficient oxygen evolution electrocatalysts |
| topic | Engineering::Chemical engineering Electrocatalysts Metal-Organic Framework |
| url | https://hdl.handle.net/10356/139029 |
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