Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions
Electrolysis of water to produce hydrogen is crucial for developing sustainable clean energy and protecting the environment. However, because of the multi-electron transfer in the oxygen evolution reaction (OER) process, the kinetics of the reaction is seriously hindered. To address this issue, we d...
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MDPI AG
2021-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/6/1450 |
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| author | Yanfang Liu Yong Li Qi Wu Zhe Su Bin Wang Yuanfu Chen Shifeng Wang |
| author_facet | Yanfang Liu Yong Li Qi Wu Zhe Su Bin Wang Yuanfu Chen Shifeng Wang |
| author_sort | Yanfang Liu |
| collection | DOAJ |
| description | Electrolysis of water to produce hydrogen is crucial for developing sustainable clean energy and protecting the environment. However, because of the multi-electron transfer in the oxygen evolution reaction (OER) process, the kinetics of the reaction is seriously hindered. To address this issue, we designed and synthesized hollow CoP/FeP<sub>4</sub> heterostructural nanorods interwoven by carbon nanotubes (CoP/FeP<sub>4</sub>@CNT) via a hydrothermal reaction and a phosphorization process. The CoP/FeP<sub>4</sub>@CNT hybrid catalyst delivers prominent OER electrochemical performances: it displays a substantially smaller Tafel slope of 48.0 mV dec<sup>−1</sup> and a lower overpotential of 301 mV at 10 mA cm<sup>−2</sup>, compared with an RuO<sub>2</sub> commercial catalyst; it also shows good stability over 20 h. The outstanding OER property is mainly attributed to the synergistic coupling between its unique CNT-interwoven hollow nanorod structure and the CoP/FeP<sub>4</sub> heterojunction, which can not only guarantee high conductivity and rich active sites, but also greatly facilitate the electron transfer, ion diffusion, and O<sub>2</sub> gas release and significantly enhance its electrocatalytic activity. This work offers a facile method to develop transition metal-based phosphide heterostructure electrocatalysts with a unique hierarchical nanostructure for high performance water oxidation. |
| first_indexed | 2024-03-10T10:52:55Z |
| format | Article |
| id | doaj.art-b48260ab5b964dd788acaa5fb1c2b4d3 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T10:52:55Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b48260ab5b964dd788acaa5fb1c2b4d32023-11-21T22:05:17ZengMDPI AGNanomaterials2079-49912021-05-01116145010.3390/nano11061450Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution ReactionsYanfang Liu0Yong Li1Qi Wu2Zhe Su3Bin Wang4Yuanfu Chen5Shifeng Wang6College of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, ChinaCollege of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, ChinaCollege of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, ChinaSchool of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaSchool of Electronic Science and Engineering, and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, ChinaCollege of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, ChinaCollege of Science, Institute of Oxygen Supply, Tibet University, Lhasa 850000, ChinaElectrolysis of water to produce hydrogen is crucial for developing sustainable clean energy and protecting the environment. However, because of the multi-electron transfer in the oxygen evolution reaction (OER) process, the kinetics of the reaction is seriously hindered. To address this issue, we designed and synthesized hollow CoP/FeP<sub>4</sub> heterostructural nanorods interwoven by carbon nanotubes (CoP/FeP<sub>4</sub>@CNT) via a hydrothermal reaction and a phosphorization process. The CoP/FeP<sub>4</sub>@CNT hybrid catalyst delivers prominent OER electrochemical performances: it displays a substantially smaller Tafel slope of 48.0 mV dec<sup>−1</sup> and a lower overpotential of 301 mV at 10 mA cm<sup>−2</sup>, compared with an RuO<sub>2</sub> commercial catalyst; it also shows good stability over 20 h. The outstanding OER property is mainly attributed to the synergistic coupling between its unique CNT-interwoven hollow nanorod structure and the CoP/FeP<sub>4</sub> heterojunction, which can not only guarantee high conductivity and rich active sites, but also greatly facilitate the electron transfer, ion diffusion, and O<sub>2</sub> gas release and significantly enhance its electrocatalytic activity. This work offers a facile method to develop transition metal-based phosphide heterostructure electrocatalysts with a unique hierarchical nanostructure for high performance water oxidation.https://www.mdpi.com/2079-4991/11/6/1450CoP-FeP<sub>4</sub> heterojunctionhollow nanorodsoxygen evolution reaction |
| spellingShingle | Yanfang Liu Yong Li Qi Wu Zhe Su Bin Wang Yuanfu Chen Shifeng Wang Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions Nanomaterials CoP-FeP<sub>4</sub> heterojunction hollow nanorods oxygen evolution reaction |
| title | Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions |
| title_full | Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions |
| title_fullStr | Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions |
| title_full_unstemmed | Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions |
| title_short | Hollow CoP/FeP<sub>4</sub> Heterostructural Nanorods Interwoven by CNT as a Highly Efficient Electrocatalyst for Oxygen Evolution Reactions |
| title_sort | hollow cop fep sub 4 sub heterostructural nanorods interwoven by cnt as a highly efficient electrocatalyst for oxygen evolution reactions |
| topic | CoP-FeP<sub>4</sub> heterojunction hollow nanorods oxygen evolution reaction |
| url | https://www.mdpi.com/2079-4991/11/6/1450 |
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