On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism
Само за регистроване кориснике
2001
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The mechanism and kinetics of the hydrogen evolution reaction (her) were studied in 1.0 mol dm(-3) NaOH at 393.0 K. It was found that a combination of classical steady-state voltammetry and impedance spectroscopy can help to elucidate dilemmas concerning the role of the Heyrovsky and Tafel steps in the mechanism of this reaction. Thus, within the potential region - 0.95 gt E gt - 1.1 V (SHE) (curvilinear part of the polarization curve) the mechanism of the her is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Tafel step, while the contribution of the parallel Heyrovsky step is negligible. At potentials E lt (approximately - 1.2 V) a Tafel line with a slope of - 0.121 V dec(-1) is obtained, with almost full coverage by H-ads ( lt theta gt (H) -- gt 1). In this potential region the mechanism of the her is a consecutive combination of a Volmer step, followed by a Heyrovsky step, while the contribution of the Tafel step is negligible. The comp...arison of the calculated partial rate constants for these two steps shows that the rate of the her is controlled by the Heyrovsky step.
Кључне речи:
hydrogen evolution reaction / nickel electrode / alkaline solution / spectroscopy of electrochemical impedance / mechanism / NLS fitting / rate constantsИзвор:
Journal of Electroanalytical Chemistry, 2001, 512, 1-2, 16-26Издавач:
- Elsevier S.A.
DOI: 10.1016/S0022-0728(01)00590-3
ISSN: 1572-6657
WoS: 000171971700002
Scopus: 2-s2.0-0035812589
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Krstajić, Nedeljko AU - Popović, Milica AU - Grgur, Branimir AU - Vojnović, Milan AU - Šepa, Darko PY - 2001 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/368 AB - The mechanism and kinetics of the hydrogen evolution reaction (her) were studied in 1.0 mol dm(-3) NaOH at 393.0 K. It was found that a combination of classical steady-state voltammetry and impedance spectroscopy can help to elucidate dilemmas concerning the role of the Heyrovsky and Tafel steps in the mechanism of this reaction. Thus, within the potential region - 0.95 gt E gt - 1.1 V (SHE) (curvilinear part of the polarization curve) the mechanism of the her is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Tafel step, while the contribution of the parallel Heyrovsky step is negligible. At potentials E lt (approximately - 1.2 V) a Tafel line with a slope of - 0.121 V dec(-1) is obtained, with almost full coverage by H-ads ( lt theta gt (H) -- gt 1). In this potential region the mechanism of the her is a consecutive combination of a Volmer step, followed by a Heyrovsky step, while the contribution of the Tafel step is negligible. The comparison of the calculated partial rate constants for these two steps shows that the rate of the her is controlled by the Heyrovsky step. PB - Elsevier S.A. T2 - Journal of Electroanalytical Chemistry T1 - On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism EP - 26 IS - 1-2 SP - 16 VL - 512 DO - 10.1016/S0022-0728(01)00590-3 ER -
@article{ author = "Krstajić, Nedeljko and Popović, Milica and Grgur, Branimir and Vojnović, Milan and Šepa, Darko", year = "2001", abstract = "The mechanism and kinetics of the hydrogen evolution reaction (her) were studied in 1.0 mol dm(-3) NaOH at 393.0 K. It was found that a combination of classical steady-state voltammetry and impedance spectroscopy can help to elucidate dilemmas concerning the role of the Heyrovsky and Tafel steps in the mechanism of this reaction. Thus, within the potential region - 0.95 gt E gt - 1.1 V (SHE) (curvilinear part of the polarization curve) the mechanism of the her is a consecutive combination of the Volmer step, followed dominantly by a rate controlling Tafel step, while the contribution of the parallel Heyrovsky step is negligible. At potentials E lt (approximately - 1.2 V) a Tafel line with a slope of - 0.121 V dec(-1) is obtained, with almost full coverage by H-ads ( lt theta gt (H) -- gt 1). In this potential region the mechanism of the her is a consecutive combination of a Volmer step, followed by a Heyrovsky step, while the contribution of the Tafel step is negligible. The comparison of the calculated partial rate constants for these two steps shows that the rate of the her is controlled by the Heyrovsky step.", publisher = "Elsevier S.A.", journal = "Journal of Electroanalytical Chemistry", title = "On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism", pages = "26-16", number = "1-2", volume = "512", doi = "10.1016/S0022-0728(01)00590-3" }
Krstajić, N., Popović, M., Grgur, B., Vojnović, M.,& Šepa, D.. (2001). On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism. in Journal of Electroanalytical Chemistry Elsevier S.A.., 512(1-2), 16-26. https://doi.org/10.1016/S0022-0728(01)00590-3
Krstajić N, Popović M, Grgur B, Vojnović M, Šepa D. On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism. in Journal of Electroanalytical Chemistry. 2001;512(1-2):16-26. doi:10.1016/S0022-0728(01)00590-3 .
Krstajić, Nedeljko, Popović, Milica, Grgur, Branimir, Vojnović, Milan, Šepa, Darko, "On the kinetics of the hydrogen evolution reaction on nickel in alkaline solution - Part I. The mechanism" in Journal of Electroanalytical Chemistry, 512, no. 1-2 (2001):16-26, https://doi.org/10.1016/S0022-0728(01)00590-3 . .