Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials
Само за регистроване кориснике
2000
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
A possible mechanism of the formation of spongy zinc electrodeposits is considered. The confirmation of the proposed semiquantitative mathematical model is performed in zinc electrodeposition onto copper wire from a 0.1 M zincate solution in 1.0 M KOH at room temperature. It was shown by SEM analysis of the deposit that the spongy growth was caused by mass transfer limitations under low nucleation rate conditions. In this situation, amplification of the surface inequalities on the independently growing grains takes place leading to the formation of the spherical agglomerate of filaments, which form a spongy deposit. Also, it was shown that in the case of a square-wave pulsating overpotential regime, the deposits are less agglomerated than the ones obtained in the case of a direct overpotential regime. This effect is more pronounced at a higher pulse-to-pulse ratio. This is explained by dissolution of filaments, based on the mathematical model of pulsating overpotential.
Извор:
Journal of Electroanalytical Chemistry, 2000, 484, 1, 18-23Издавач:
- Elsevier Sequoia SA
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Simičić, M.V. AU - Popov, K.I. AU - Krstajić, Nedeljko V. PY - 2000 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5311 AB - A possible mechanism of the formation of spongy zinc electrodeposits is considered. The confirmation of the proposed semiquantitative mathematical model is performed in zinc electrodeposition onto copper wire from a 0.1 M zincate solution in 1.0 M KOH at room temperature. It was shown by SEM analysis of the deposit that the spongy growth was caused by mass transfer limitations under low nucleation rate conditions. In this situation, amplification of the surface inequalities on the independently growing grains takes place leading to the formation of the spherical agglomerate of filaments, which form a spongy deposit. Also, it was shown that in the case of a square-wave pulsating overpotential regime, the deposits are less agglomerated than the ones obtained in the case of a direct overpotential regime. This effect is more pronounced at a higher pulse-to-pulse ratio. This is explained by dissolution of filaments, based on the mathematical model of pulsating overpotential. PB - Elsevier Sequoia SA T2 - Journal of Electroanalytical Chemistry T1 - Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials EP - 23 IS - 1 SP - 18 VL - 484 DO - 10.1016/S0022-0728(00)00035-8 ER -
@article{ author = "Simičić, M.V. and Popov, K.I. and Krstajić, Nedeljko V.", year = "2000", abstract = "A possible mechanism of the formation of spongy zinc electrodeposits is considered. The confirmation of the proposed semiquantitative mathematical model is performed in zinc electrodeposition onto copper wire from a 0.1 M zincate solution in 1.0 M KOH at room temperature. It was shown by SEM analysis of the deposit that the spongy growth was caused by mass transfer limitations under low nucleation rate conditions. In this situation, amplification of the surface inequalities on the independently growing grains takes place leading to the formation of the spherical agglomerate of filaments, which form a spongy deposit. Also, it was shown that in the case of a square-wave pulsating overpotential regime, the deposits are less agglomerated than the ones obtained in the case of a direct overpotential regime. This effect is more pronounced at a higher pulse-to-pulse ratio. This is explained by dissolution of filaments, based on the mathematical model of pulsating overpotential.", publisher = "Elsevier Sequoia SA", journal = "Journal of Electroanalytical Chemistry", title = "Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials", pages = "23-18", number = "1", volume = "484", doi = "10.1016/S0022-0728(00)00035-8" }
Simičić, M.V., Popov, K.I.,& Krstajić, N. V.. (2000). Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials. in Journal of Electroanalytical Chemistry Elsevier Sequoia SA., 484(1), 18-23. https://doi.org/10.1016/S0022-0728(00)00035-8
Simičić M, Popov K, Krstajić NV. Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials. in Journal of Electroanalytical Chemistry. 2000;484(1):18-23. doi:10.1016/S0022-0728(00)00035-8 .
Simičić, M.V., Popov, K.I., Krstajić, Nedeljko V., "Experimental study of zinc morphology in alkaline electrolyte at low direct and pulsating overpotentials" in Journal of Electroanalytical Chemistry, 484, no. 1 (2000):18-23, https://doi.org/10.1016/S0022-0728(00)00035-8 . .