Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions
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2016
Authors
Jović, B. M.Jović, Vladimir D.
Lačnjevac, Uroš
Stevanović, Sanja

Kovać, J.
Radović, M.
Krstajić, Nedeljko V.
Article (Published version)

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In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the ...most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.
Keywords:
Ti2AlC / Electrodeposited Ru / H-2 evolution / Acid solution / Electrochemical impedance spectroscopy / Cyclic voltammetrySource:
Journal of Electroanalytical Chemistry, 2016, 766, 78-86Publisher:
- Elsevier
Funding / projects:
- Development, characterization and application nanostructured and composite electrocatalysts and interactive supports for fuel cells and water electrolysis (RS-172054)
- Jozef Stefan Institute, Ljubljana, Slovenia - 451-03-3095/2014-09/26
Note:
- Peer-reviewed manuscript: https://technorep.tmf.bg.ac.rs/handle/123456789/6365
Related info:
DOI: 10.1016/j.jelechem.2016.01.038
ISSN: 1572-6657
WoS: 000374605200011
Scopus: 2-s2.0-84957809274
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Jović, B. M. AU - Jović, Vladimir D. AU - Lačnjevac, Uroš AU - Stevanović, Sanja AU - Kovać, J. AU - Radović, M. AU - Krstajić, Nedeljko V. PY - 2016 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5839 AB - In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested. PB - Elsevier T2 - Journal of Electroanalytical Chemistry T1 - Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions EP - 86 SP - 78 VL - 766 DO - 10.1016/j.jelechem.2016.01.038 ER -
@article{ author = "Jović, B. M. and Jović, Vladimir D. and Lačnjevac, Uroš and Stevanović, Sanja and Kovać, J. and Radović, M. and Krstajić, Nedeljko V.", year = "2016", abstract = "In this work, the hydrogen evolution reaction (HER) was studied on Ru coated Ti2AlC electrodes in 1.0 mol dm(-3) H2SO4 at 25 degrees C. Ti2AlC was found to be a highly stable substrate in sulfuric acid solutions due to the formation of a passivating oxide layer on the surface, which was confirmed by the X-ray photoelectron spectroscopy (XPS) analysis of as-prepared and anodically treated Ti2AlC samples. Ru films were electrodeposited onto Ti2AlC substrates by cycling the potential of Ti2AlC in the solution containing 0.01 mol dm(-3) RuCl3 + 0.1 mol dm(-3) H2SO4 between -0.5 V and 0.4 V vs. a saturated calomel electrode (SCE) at the sweep rate of 20 mV s(-1). Four Ru/Ti2AlC samples were prepared, obtained at 5, 10, 15 and 20 cycles of Ru electrodeposition. Characterization of samples was performed by scanning electron microscopy (SEM) and cyclic voltammetry (CV), while the thickness of the electrodeposited Ru layers was determined by atomic force microscopy (AFM). It was found that the most compact sample with the thickness of about 0.42 mu m was obtained after 5 cycles. Electrochemical impedance spectroscopy (EIS) and steady-state polarization measurements showed that all Ru/Ti2AlC electrodes were exceptionally active for the HER. A Tafel slope of about -60 mV dec(-1) was observed on all polarization curves in the range of high cathodic current densities. Based on formal kinetics analysis, an appropriate mechanism for the HER on Ru/Ti2AlC was suggested.", publisher = "Elsevier", journal = "Journal of Electroanalytical Chemistry", title = "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions", pages = "86-78", volume = "766", doi = "10.1016/j.jelechem.2016.01.038" }
Jović, B. M., Jović, V. D., Lačnjevac, U., Stevanović, S., Kovać, J., Radović, M.,& Krstajić, N. V.. (2016). Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry Elsevier., 766, 78-86. https://doi.org/10.1016/j.jelechem.2016.01.038
Jović BM, Jović VD, Lačnjevac U, Stevanović S, Kovać J, Radović M, Krstajić NV. Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions. in Journal of Electroanalytical Chemistry. 2016;766:78-86. doi:10.1016/j.jelechem.2016.01.038 .
Jović, B. M., Jović, Vladimir D., Lačnjevac, Uroš, Stevanović, Sanja, Kovać, J., Radović, M., Krstajić, Nedeljko V., "Ru layers electrodeposited onto highly stable Ti2AlC substrates as cathodes for hydrogen evolution in sulfuric acid solutions" in Journal of Electroanalytical Chemistry, 766 (2016):78-86, https://doi.org/10.1016/j.jelechem.2016.01.038 . .