Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution
Hydrogen energy as a sustainable alternative to fossil fuels necessitates the development of cost-effective and efficient electrocatalysts for the hydrogen evolution reaction (HER). While transition metal sulfides have shown promise, their practical application is hindered by insufficient active sit...
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2025-05-01
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| author | Wenjing He Jianliang Cao Xinliang Zhou Ning Zhang Yuzhu Qi Jin Li Naiteng Wu Xianming Liu |
| author_facet | Wenjing He Jianliang Cao Xinliang Zhou Ning Zhang Yuzhu Qi Jin Li Naiteng Wu Xianming Liu |
| author_sort | Wenjing He |
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| description | Hydrogen energy as a sustainable alternative to fossil fuels necessitates the development of cost-effective and efficient electrocatalysts for the hydrogen evolution reaction (HER). While transition metal sulfides have shown promise, their practical application is hindered by insufficient active sites, poor conductivity, and suboptimal hydrogen adsorption kinetics. Herein, we present a heterointerface engineering strategy to construct Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> heterojunctions anchored on bamboo fiber-derived nitrogen-doped porous carbon (Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub>/BFPC) through hydrothermal synthesis and subsequent carbonization. BFPC carbon quasi-aerogel support not only offers a high surface area and conductive pathways but also enables uniform dispersion of active sites through nitrogen doping, which simultaneously optimizes electron transfer and mass transport. Experimental results demonstrate exceptional HER performance in alkaline media, achieving a low overpotential of 86.6 mV at 10 mA cm<sup>−2</sup>, a Tafel slope of 68.87 mV dec<sup>−1</sup>, and remarkable stability over 73 h of continuous operation. This work highlights the dual advantages of heterointerface design and carbon substrate functionalization, providing a scalable template for developing noble metal-free electrocatalysts for energy conversion technologies. |
| format | Article |
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| institution | Matheson Library |
| issn | 2310-2861 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-bcc0a4be70134b92abb183d2e9f972a92025-06-25T13:53:38ZengMDPI AGGels2310-28612025-05-0111639010.3390/gels11060390Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen EvolutionWenjing He0Jianliang Cao1Xinliang Zhou2Ning Zhang3Yuzhu Qi4Jin Li5Naiteng Wu6Xianming Liu7School of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaSchool of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454000, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHenan Key Laboratory of Function-Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934, ChinaHydrogen energy as a sustainable alternative to fossil fuels necessitates the development of cost-effective and efficient electrocatalysts for the hydrogen evolution reaction (HER). While transition metal sulfides have shown promise, their practical application is hindered by insufficient active sites, poor conductivity, and suboptimal hydrogen adsorption kinetics. Herein, we present a heterointerface engineering strategy to construct Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> heterojunctions anchored on bamboo fiber-derived nitrogen-doped porous carbon (Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub>/BFPC) through hydrothermal synthesis and subsequent carbonization. BFPC carbon quasi-aerogel support not only offers a high surface area and conductive pathways but also enables uniform dispersion of active sites through nitrogen doping, which simultaneously optimizes electron transfer and mass transport. Experimental results demonstrate exceptional HER performance in alkaline media, achieving a low overpotential of 86.6 mV at 10 mA cm<sup>−2</sup>, a Tafel slope of 68.87 mV dec<sup>−1</sup>, and remarkable stability over 73 h of continuous operation. This work highlights the dual advantages of heterointerface design and carbon substrate functionalization, providing a scalable template for developing noble metal-free electrocatalysts for energy conversion technologies.https://www.mdpi.com/2310-2861/11/6/390carbon quasi-aerogelhydrogen evolution electrocatalystheterostructuretransition metal sulfides |
| spellingShingle | Wenjing He Jianliang Cao Xinliang Zhou Ning Zhang Yuzhu Qi Jin Li Naiteng Wu Xianming Liu Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution Gels carbon quasi-aerogel hydrogen evolution electrocatalyst heterostructure transition metal sulfides |
| title | Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution |
| title_full | Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution |
| title_fullStr | Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution |
| title_full_unstemmed | Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution |
| title_short | Bi-Interfacial Electron Modulation in Co<sub>9</sub>S<sub>8</sub>/FeCoS<sub>2</sub> Heterostructures Anchored on Bamboo-Derived Carbon Quasi-Aerogel for High-Performance Hydrogen Evolution |
| title_sort | bi interfacial electron modulation in co sub 9 sub s sub 8 sub fecos sub 2 sub heterostructures anchored on bamboo derived carbon quasi aerogel for high performance hydrogen evolution |
| topic | carbon quasi-aerogel hydrogen evolution electrocatalyst heterostructure transition metal sulfides |
| url | https://www.mdpi.com/2310-2861/11/6/390 |
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