The kinetics and mechanism of hydrogen evolution at Ti-Ni alloy electrodes prepared by are-melting and mechanical alloying methods has been studied by means of AC impedance spectrum measurements. The electrode, prepared by mechanical alloying (porous electrode), after activation in a 10% HF solution, is very active despite its large Tafel slope. The SEM studies show a formation of deep pores on the electrode surface. The rate constants of the forward and backward reactions of the corresponding steps were estimated by a nonlinear fitting method. It has been found that the overall reaction proceeds through a Volmer-Heyrovsky mechanism.
Keywords:
metal hydrides / hydrogen absorption mechanism / kinetics / impedance
Source:
Journal of Alloys and Compounds, 1997, 257, 1-2, 245-252
TY - JOUR
AU - Krstajić, Nedeljko
AU - Grgur, Branimir
AU - Zdujić, Miodrag
AU - Vojnović, Milan
AU - Jakšić, M. M.
PY - 1997
UR - https://dais.sanu.ac.rs/123456789/10666
AB - The kinetics and mechanism of hydrogen evolution at Ti-Ni alloy electrodes prepared by are-melting and mechanical alloying methods has been studied by means of AC impedance spectrum measurements. The electrode, prepared by mechanical alloying (porous electrode), after activation in a 10% HF solution, is very active despite its large Tafel slope. The SEM studies show a formation of deep pores on the electrode surface. The rate constants of the forward and backward reactions of the corresponding steps were estimated by a nonlinear fitting method. It has been found that the overall reaction proceeds through a Volmer-Heyrovsky mechanism.
PB - Lausanne : Elsevier Science Sa
T2 - Journal of Alloys and Compounds
T1 - Kinetic properties of the Ti-Ni intermetallic phases and alloys for hydrogen evolution
SP - 245
EP - 252
VL - 257
IS - 1-2
DO - 10.1016/S0925-8388(97)00018-2
UR - https://hdl.handle.net/21.15107/rcub_dais_10666
ER -
@article{
author = "Krstajić, Nedeljko and Grgur, Branimir and Zdujić, Miodrag and Vojnović, Milan and Jakšić, M. M.",
year = "1997",
abstract = "The kinetics and mechanism of hydrogen evolution at Ti-Ni alloy electrodes prepared by are-melting and mechanical alloying methods has been studied by means of AC impedance spectrum measurements. The electrode, prepared by mechanical alloying (porous electrode), after activation in a 10% HF solution, is very active despite its large Tafel slope. The SEM studies show a formation of deep pores on the electrode surface. The rate constants of the forward and backward reactions of the corresponding steps were estimated by a nonlinear fitting method. It has been found that the overall reaction proceeds through a Volmer-Heyrovsky mechanism.",
publisher = "Lausanne : Elsevier Science Sa",
journal = "Journal of Alloys and Compounds",
title = "Kinetic properties of the Ti-Ni intermetallic phases and alloys for hydrogen evolution",
pages = "245-252",
volume = "257",
number = "1-2",
doi = "10.1016/S0925-8388(97)00018-2",
url = "https://hdl.handle.net/21.15107/rcub_dais_10666"
}
Krstajić, N., Grgur, B., Zdujić, M., Vojnović, M.,& Jakšić, M. M.. (1997). Kinetic properties of the Ti-Ni intermetallic phases and alloys for hydrogen evolution. in Journal of Alloys and Compounds
Lausanne : Elsevier Science Sa., 257(1-2), 245-252.
https://doi.org/10.1016/S0925-8388(97)00018-2
https://hdl.handle.net/21.15107/rcub_dais_10666
Krstajić N, Grgur B, Zdujić M, Vojnović M, Jakšić MM. Kinetic properties of the Ti-Ni intermetallic phases and alloys for hydrogen evolution. in Journal of Alloys and Compounds. 1997;257(1-2):245-252.
doi:10.1016/S0925-8388(97)00018-2
https://hdl.handle.net/21.15107/rcub_dais_10666 .
Krstajić, Nedeljko, Grgur, Branimir, Zdujić, Miodrag, Vojnović, Milan, Jakšić, M. M., "Kinetic properties of the Ti-Ni intermetallic phases and alloys for hydrogen evolution" in Journal of Alloys and Compounds, 257, no. 1-2 (1997):245-252,
https://doi.org/10.1016/S0925-8388(97)00018-2 .,
https://hdl.handle.net/21.15107/rcub_dais_10666 .
