One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting
As high-quality substitutes for conventional catalysts, the bifunctional catalytic properties of the coating of transition-metal-based materials are pivotal for improving water-splitting efficiency. Herein, cobalt-molybdenum bimetallic phosphide nanofibers (CoMoP NFs) were synthesized via a series o...
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MDPI AG
2022-11-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/21/3886 |
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| author | Xin Chang Jun Yan Xinyao Ding Yaozu Jia Shijie Li Mingyi Zhang |
| author_facet | Xin Chang Jun Yan Xinyao Ding Yaozu Jia Shijie Li Mingyi Zhang |
| author_sort | Xin Chang |
| collection | DOAJ |
| description | As high-quality substitutes for conventional catalysts, the bifunctional catalytic properties of the coating of transition-metal-based materials are pivotal for improving water-splitting efficiency. Herein, cobalt-molybdenum bimetallic phosphide nanofibers (CoMoP NFs) were synthesized via a series of facile strategies, which are divided into pyrolysis electrospun PAN and metal salts, to obtain one-dimensional morphology and a gas-solid phosphating precursor. The obtained CoMoP NFs catalyst has superior catalytic activity performance in 1M KOH. Serving as an oxygen evolution reaction (OER) catalyst, the electrode of the CoMoP NFs affords different kinds of current densities at 50 mA cm<sup>−2</sup> and 100 mA cm<sup>−2</sup>, with low overpotentials of 362 and 391 mV, respectively. In addition, the hydrogen evolution reaction (HER) performance of the CoMoP NFs mainly shows when under a low overpotential of 126 mV, which can deliver a current density of 10 mA cm<sup>−2</sup>. In order to further detect the stability of the catalyst, we used multiple cyclic voltammetry and chronopotentiometry tests for OERs and HERs, which maintain performance and carry a current density of 10 mA cm<sup>−2</sup> for longer. As an integrated high-performance bifunctional electrode for overall water splitting, the CoMoP NFs only require 1.75 V@10 mA cm<sup>−2</sup> for 40 h. This work highlights a facile method to create an electrocatalyst with fiber nanostructures which possesses excellent activity as an alkaline electrolyte. |
| first_indexed | 2024-03-09T18:46:54Z |
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| id | doaj.art-521270efb17642839619c9d3fc54a6f1 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:46:54Z |
| publishDate | 2022-11-01 |
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| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-521270efb17642839619c9d3fc54a6f12023-11-24T06:10:50ZengMDPI AGNanomaterials2079-49912022-11-011221388610.3390/nano12213886One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water SplittingXin Chang0Jun Yan1Xinyao Ding2Yaozu Jia3Shijie Li4Mingyi Zhang5Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, ChinaKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, ChinaKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, ChinaKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, ChinaNational Engineering Research Center for Marine Aquaculture, Institute of Innovation & Application, Zhejiang Ocean University, Zhoushan 316022, ChinaKey Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, ChinaAs high-quality substitutes for conventional catalysts, the bifunctional catalytic properties of the coating of transition-metal-based materials are pivotal for improving water-splitting efficiency. Herein, cobalt-molybdenum bimetallic phosphide nanofibers (CoMoP NFs) were synthesized via a series of facile strategies, which are divided into pyrolysis electrospun PAN and metal salts, to obtain one-dimensional morphology and a gas-solid phosphating precursor. The obtained CoMoP NFs catalyst has superior catalytic activity performance in 1M KOH. Serving as an oxygen evolution reaction (OER) catalyst, the electrode of the CoMoP NFs affords different kinds of current densities at 50 mA cm<sup>−2</sup> and 100 mA cm<sup>−2</sup>, with low overpotentials of 362 and 391 mV, respectively. In addition, the hydrogen evolution reaction (HER) performance of the CoMoP NFs mainly shows when under a low overpotential of 126 mV, which can deliver a current density of 10 mA cm<sup>−2</sup>. In order to further detect the stability of the catalyst, we used multiple cyclic voltammetry and chronopotentiometry tests for OERs and HERs, which maintain performance and carry a current density of 10 mA cm<sup>−2</sup> for longer. As an integrated high-performance bifunctional electrode for overall water splitting, the CoMoP NFs only require 1.75 V@10 mA cm<sup>−2</sup> for 40 h. This work highlights a facile method to create an electrocatalyst with fiber nanostructures which possesses excellent activity as an alkaline electrolyte.https://www.mdpi.com/2079-4991/12/21/3886CoMoPOERHERCNFselectrospinning |
| spellingShingle | Xin Chang Jun Yan Xinyao Ding Yaozu Jia Shijie Li Mingyi Zhang One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting Nanomaterials CoMoP OER HER CNFs electrospinning |
| title | One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting |
| title_full | One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting |
| title_fullStr | One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting |
| title_full_unstemmed | One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting |
| title_short | One-Dimensional CoMoP Nanostructures as Bifunctional Electrodes for Overall Water Splitting |
| title_sort | one dimensional comop nanostructures as bifunctional electrodes for overall water splitting |
| topic | CoMoP OER HER CNFs electrospinning |
| url | https://www.mdpi.com/2079-4991/12/21/3886 |
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