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2024-11-04

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cc-by (c) Majumdar, Shubhadeep et al., 2024
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/224715

Enhancing hydrogen evolution: Carbon nanotubes as a scaffold for Mo2C deposition via magnetron sputtering and chemical vapor deposition

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https://doi.org/10.1016/j.ijhydene.2024.09.425

Resum

This study presents an innovative approach to fabricating carbon nanotubes (CNTs) through magnetron sputtering and chemical vapor deposition (CVD). These CNTs serve as a robust structural scaffold for the deposition of molybdenum, which, through thermal annealing, becomes molybdenum carbide (Mo2C), which is highly efficient for hydrogen evolution reaction (HER). Our investigation delves into the physical and chemical attributes of these electrodes, revealing insights into the functionality of Mo2C on CNTs hybrid structures. Chemical characterization confirms the exceptional performance of the electrode. Our Mo2C on CNT hybrid system showcases remarkable electrocatalytic activity, with an onset potential of 103 mV at 1 mA/cm2 and an overpotential of 176 mV at 10 mA/cm2. Further validation comes from tests revealing a Tafel slope of 95 mV/dec, affirming its superiority in facilitating HER. Unparalleled combination of low charge transfer resistance and accelerated reaction kinetics, Mo2C on CNTs hybrid structure is poised to significantly enhance HER activity.

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Deposició química en fase vapor, Nanotubs

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Chemical vapor deposition, Nanotubes

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Articles publicats en revistes (Física Aplicada)

Citació

MAJUMDAR, Shubhadeep, CHAITOGLOU, Stefanos, SERAFIN, Jarosław, FARID, Ghulam, OSPINA, Rogelio, MA, Y., AMADE ROVIRA, Roger, BERTRÁN SERRA, Enric. Enhancing hydrogen evolution: Carbon nanotubes as a scaffold for Mo2C deposition via magnetron sputtering and chemical vapor deposition. _International Journal of Hydrogen Energy_. 2024. Vol. 89, núm. 977-989. [consulta: 9 de gener de 2026]. ISSN: 0360-3199. [Disponible a: https://hdl.handle.net/2445/224715]

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