In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution
Low-cost and highly effective catalysts are crucial to the electrocatalytic hydrogen evolution reaction (HER). Among non-noble catalysts, molybdenum carbides are promising candidates because of their high reserves, stability, low cost, and structural diversity. In this work, we report a simple metho...
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Frontiers Media S.A.
2020-04-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2020.00170/full |
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| author | Suli Liu Xueqin Mu Ruilin Cheng Shiyu Lin Yang Zhu Changyun Chen Shichun Mu |
| author_facet | Suli Liu Xueqin Mu Ruilin Cheng Shiyu Lin Yang Zhu Changyun Chen Shichun Mu |
| author_sort | Suli Liu |
| collection | DOAJ |
| description | Low-cost and highly effective catalysts are crucial to the electrocatalytic hydrogen evolution reaction (HER). Among non-noble catalysts, molybdenum carbides are promising candidates because of their high reserves, stability, low cost, and structural diversity. In this work, we report a simple method to fabricate a hollow porous Mo2C@C nanoball through a hydrothermal preparation process of molybdenum precursors at high temperatures. Specifically, we have combined interfacial polymerization and the chelation effect to synthesize the Mo-polydopamine (Mo-PDA) precursor. As a result, Mo2C@C-3 only requires an ultralow Tafel slope (~55 mV dec−1) and low overpotential (η50 ≈ 167 mV) in a 0.5 M H2SO4 solution with long-term cycling stability. Besides, it also exhibits outstanding activity and stability under extensive HER testing in alkaline media. This study is promising for the development of advanced molybdenum carbide electrocatalysts toward electrochemical applications. |
| first_indexed | 2024-12-13T12:24:43Z |
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| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-12-13T12:24:43Z |
| publishDate | 2020-04-01 |
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| series | Frontiers in Chemistry |
| spelling | doaj.art-c85559a3c58c4699ab23689c6bed2aa42022-12-21T23:46:26ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462020-04-01810.3389/fchem.2020.00170530947In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen EvolutionSuli Liu0Xueqin Mu1Ruilin Cheng2Shiyu Lin3Yang Zhu4Changyun Chen5Shichun Mu6Department of Chemistry, Nanjing Xiaozhuang University, Nanjing, ChinaDepartment of Chemistry, Nanjing Xiaozhuang University, Nanjing, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, ChinaDepartment of Chemistry, Nanjing Xiaozhuang University, Nanjing, ChinaDepartment of Chemistry, Nanjing Xiaozhuang University, Nanjing, ChinaDepartment of Chemistry, Nanjing Xiaozhuang University, Nanjing, ChinaState Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, ChinaLow-cost and highly effective catalysts are crucial to the electrocatalytic hydrogen evolution reaction (HER). Among non-noble catalysts, molybdenum carbides are promising candidates because of their high reserves, stability, low cost, and structural diversity. In this work, we report a simple method to fabricate a hollow porous Mo2C@C nanoball through a hydrothermal preparation process of molybdenum precursors at high temperatures. Specifically, we have combined interfacial polymerization and the chelation effect to synthesize the Mo-polydopamine (Mo-PDA) precursor. As a result, Mo2C@C-3 only requires an ultralow Tafel slope (~55 mV dec−1) and low overpotential (η50 ≈ 167 mV) in a 0.5 M H2SO4 solution with long-term cycling stability. Besides, it also exhibits outstanding activity and stability under extensive HER testing in alkaline media. This study is promising for the development of advanced molybdenum carbide electrocatalysts toward electrochemical applications.https://www.frontiersin.org/article/10.3389/fchem.2020.00170/fullmolybdenum carbidemo-polydopamineporous nanostructureselectrocatalysthydrogen evolution reaction |
| spellingShingle | Suli Liu Xueqin Mu Ruilin Cheng Shiyu Lin Yang Zhu Changyun Chen Shichun Mu In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution Frontiers in Chemistry molybdenum carbide mo-polydopamine porous nanostructures electrocatalyst hydrogen evolution reaction |
| title | In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution |
| title_full | In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution |
| title_fullStr | In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution |
| title_full_unstemmed | In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution |
| title_short | In situ Engineering of Hollow Porous Mo2C@C Nanoballs Derived From Giant Mo-Polydopamine Clusters as Highly Efficient Electrocatalysts for Hydrogen Evolution |
| title_sort | in situ engineering of hollow porous mo2c c nanoballs derived from giant mo polydopamine clusters as highly efficient electrocatalysts for hydrogen evolution |
| topic | molybdenum carbide mo-polydopamine porous nanostructures electrocatalyst hydrogen evolution reaction |
| url | https://www.frontiersin.org/article/10.3389/fchem.2020.00170/full |
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