Designing of the shape of zinc particles by variation of electrolysis conditions
2024
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Аутори
Nikolić, Nebojša D.Lović, Jelena D.
Vuković, Nikola
Stevanović, Sanja I.
Остала ауторства
Pavlović, MiroslavPantović Pavlović, Marijana
Pavlović, Miomir
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Zinc-air batteries belong to the group of green and sustainable energy storage systems, and as such, they attract a huge attention of both academic and technological communities. For this system, the alkaline electrolytes of zinc with high concentrations of ZnO and KOH are used. Morphology of zinc electrodeposits is characterized by the scanning electron microscopy (SEM) technique, and it was found that it depended on an overpotential of the electrodeposition with a strong contribution of a length of the electrodeposition time on the final shape. Variety of morphological shapes was observed: irregular and regular grains including those hexagonal shape were predominately formed at the overpotential belonging to the plateau of the limiting diffusion current density. The compact both regular and irregular dendrites were formed at this overpotential with the longer electrodeposition time. The 2D (two-dimensional) and 3D (three-dimensional) dendrites were formed at overpotentials outside th...e plateau of the limiting diffusion current density, in the zone of the rapid growth of the current density with the increase of the overpotential. In this zone, hydrogen evolution reaction as the second reaction to Zn electrolysis at high overpotentials started to take place. It is manifested by the appearance of craters on the surface of the electrode, which originate from detached hydrogen bubbles. All morpholical forms were explained and discussed applying the basic laws of electrocrystallization.
Кључне речи:
zinc / electrolysis / morphology / SEM / dendrites / hydrogenИзвор:
XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection, 2024Издавач:
- Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)
Финансирање / пројекти:
- Министарство науке, технолошког развоја и иновација Републике Србије, институционално финансирање - 200026 (Универзитет у Београду, Институт за хемију, технологију и металургију - ИХТМ) (RS-MESTD-inst-2020-200026)
- AdCatFC - Advanced Catalysts for Low Temperature Fuel Cells: From Model System to Sustainable Catalysts (RS-ScienceFundRS-Ideje-7739802)
Институција/група
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - CONF AU - Nikolić, Nebojša D. AU - Lović, Jelena D. AU - Vuković, Nikola AU - Stevanović, Sanja I. PY - 2024 UR - https://ritnms.itnms.ac.rs/handle/123456789/1285 AB - Zinc-air batteries belong to the group of green and sustainable energy storage systems, and as such, they attract a huge attention of both academic and technological communities. For this system, the alkaline electrolytes of zinc with high concentrations of ZnO and KOH are used. Morphology of zinc electrodeposits is characterized by the scanning electron microscopy (SEM) technique, and it was found that it depended on an overpotential of the electrodeposition with a strong contribution of a length of the electrodeposition time on the final shape. Variety of morphological shapes was observed: irregular and regular grains including those hexagonal shape were predominately formed at the overpotential belonging to the plateau of the limiting diffusion current density. The compact both regular and irregular dendrites were formed at this overpotential with the longer electrodeposition time. The 2D (two-dimensional) and 3D (three-dimensional) dendrites were formed at overpotentials outside the plateau of the limiting diffusion current density, in the zone of the rapid growth of the current density with the increase of the overpotential. In this zone, hydrogen evolution reaction as the second reaction to Zn electrolysis at high overpotentials started to take place. It is manifested by the appearance of craters on the surface of the electrode, which originate from detached hydrogen bubbles. All morpholical forms were explained and discussed applying the basic laws of electrocrystallization. PB - Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM) C3 - XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection T1 - Designing of the shape of zinc particles by variation of electrolysis conditions ER -
@conference{ author = "Nikolić, Nebojša D. and Lović, Jelena D. and Vuković, Nikola and Stevanović, Sanja I.", year = "2024", abstract = "Zinc-air batteries belong to the group of green and sustainable energy storage systems, and as such, they attract a huge attention of both academic and technological communities. For this system, the alkaline electrolytes of zinc with high concentrations of ZnO and KOH are used. Morphology of zinc electrodeposits is characterized by the scanning electron microscopy (SEM) technique, and it was found that it depended on an overpotential of the electrodeposition with a strong contribution of a length of the electrodeposition time on the final shape. Variety of morphological shapes was observed: irregular and regular grains including those hexagonal shape were predominately formed at the overpotential belonging to the plateau of the limiting diffusion current density. The compact both regular and irregular dendrites were formed at this overpotential with the longer electrodeposition time. The 2D (two-dimensional) and 3D (three-dimensional) dendrites were formed at overpotentials outside the plateau of the limiting diffusion current density, in the zone of the rapid growth of the current density with the increase of the overpotential. In this zone, hydrogen evolution reaction as the second reaction to Zn electrolysis at high overpotentials started to take place. It is manifested by the appearance of craters on the surface of the electrode, which originate from detached hydrogen bubbles. All morpholical forms were explained and discussed applying the basic laws of electrocrystallization.", publisher = "Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)", journal = "XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection", title = "Designing of the shape of zinc particles by variation of electrolysis conditions" }
Nikolić, N. D., Lović, J. D., Vuković, N.,& Stevanović, S. I.. (2024). Designing of the shape of zinc particles by variation of electrolysis conditions. in XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection Belgrade : Serbian Society of Corrosion and Materials Protection (UISKOZAM)..
Nikolić ND, Lović JD, Vuković N, Stevanović SI. Designing of the shape of zinc particles by variation of electrolysis conditions. in XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection. 2024;..
Nikolić, Nebojša D., Lović, Jelena D., Vuković, Nikola, Stevanović, Sanja I., "Designing of the shape of zinc particles by variation of electrolysis conditions" in XXV YuCorr International Conference – Meeting Point of the Science and Practice in the Fields of Corrosion, Materials and Environmental Protection (2024).