Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media
The reliable and cost-effective production of high-performance film electrodes for hydrogen evolution reactions remains a challenge for the laser surface modification community. In this study, prior to a thermal imidization reaction, a small number of Fe<sub>3</sub>O<sub>4</sub&...
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MDPI AG
2022-07-01
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| Series: | International Journal of Molecular Sciences |
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| Online Access: | https://www.mdpi.com/1422-0067/23/13/7477 |
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| author | Dun Wu Jiaming Zhao Junfeng Cheng Chunlin Liu Qiang Wang |
| author_facet | Dun Wu Jiaming Zhao Junfeng Cheng Chunlin Liu Qiang Wang |
| author_sort | Dun Wu |
| collection | DOAJ |
| description | The reliable and cost-effective production of high-performance film electrodes for hydrogen evolution reactions remains a challenge for the laser surface modification community. In this study, prior to a thermal imidization reaction, a small number of Fe<sub>3</sub>O<sub>4</sub> nanoparticles were vortexed into a poly(amic acid) (PAA) prepolymer, and the achieved flat composite film was then ablated by a 1064 nm fiber laser. After laser irradiation, the hierarchical architectures of carbon nanosheets decorated with Fe<sub>3</sub>O<sub>4</sub> nanoparticles were generated. Although pure polyimide (PI) film and laser carbonized PI film, as well as bare Fe<sub>3</sub>O<sub>4</sub>, showcase poor intrinsic catalytic activity toward alkaline hydrogen evolution reactions, our laser-derived Fe<sub>3</sub>O<sub>4</sub>/carbon nanosheet hybrid film demonstrated enhanced electrocatalytic activity and stability in 1 M KOH electrolyte; the overpotential(η<sub>10</sub>) reached 247 mV when the current density was 10 mA cm<sup>−2</sup> with a slight current decay in the chronoamperometric examination of 12 h. Finally, we proposed that the substitution of N to O in Fe−O sites of trans spinel structured magnetite would be able to modulate the free energy of hydrogen adsorption (ΔG<sub>H*</sub>) and accelerate water dissociation. |
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| issn | 1661-6596 1422-0067 |
| language | English |
| last_indexed | 2024-03-09T04:06:41Z |
| publishDate | 2022-07-01 |
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| series | International Journal of Molecular Sciences |
| spelling | doaj.art-86f1eaf4e3d14e959ea4b721b71de4b42023-12-03T14:05:56ZengMDPI AGInternational Journal of Molecular Sciences1661-65961422-00672022-07-012313747710.3390/ijms23137477Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline MediaDun Wu0Jiaming Zhao1Junfeng Cheng2Chunlin Liu3Qiang Wang4Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaJiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, School of Materials Science and Engineering, Changzhou University, Changzhou 213164, ChinaThe reliable and cost-effective production of high-performance film electrodes for hydrogen evolution reactions remains a challenge for the laser surface modification community. In this study, prior to a thermal imidization reaction, a small number of Fe<sub>3</sub>O<sub>4</sub> nanoparticles were vortexed into a poly(amic acid) (PAA) prepolymer, and the achieved flat composite film was then ablated by a 1064 nm fiber laser. After laser irradiation, the hierarchical architectures of carbon nanosheets decorated with Fe<sub>3</sub>O<sub>4</sub> nanoparticles were generated. Although pure polyimide (PI) film and laser carbonized PI film, as well as bare Fe<sub>3</sub>O<sub>4</sub>, showcase poor intrinsic catalytic activity toward alkaline hydrogen evolution reactions, our laser-derived Fe<sub>3</sub>O<sub>4</sub>/carbon nanosheet hybrid film demonstrated enhanced electrocatalytic activity and stability in 1 M KOH electrolyte; the overpotential(η<sub>10</sub>) reached 247 mV when the current density was 10 mA cm<sup>−2</sup> with a slight current decay in the chronoamperometric examination of 12 h. Finally, we proposed that the substitution of N to O in Fe−O sites of trans spinel structured magnetite would be able to modulate the free energy of hydrogen adsorption (ΔG<sub>H*</sub>) and accelerate water dissociation.https://www.mdpi.com/1422-0067/23/13/7477laser ablationphotothermal agenthydrogen evolution reaction |
| spellingShingle | Dun Wu Jiaming Zhao Junfeng Cheng Chunlin Liu Qiang Wang Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media International Journal of Molecular Sciences laser ablation photothermal agent hydrogen evolution reaction |
| title | Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media |
| title_full | Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media |
| title_fullStr | Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media |
| title_full_unstemmed | Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media |
| title_short | Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe<sub>3</sub>O<sub>4</sub>/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media |
| title_sort | laser shock fabrication of nitrogen doped inverse spinel fe sub 3 sub o sub 4 sub carbon nanosheet film electrodes towards hydrogen evolution reactions in alkaline media |
| topic | laser ablation photothermal agent hydrogen evolution reaction |
| url | https://www.mdpi.com/1422-0067/23/13/7477 |
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