Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals
Апстракт
The polarization and morphological characteristics of powder forms of the group of the intermediate metals were examined by the analysis of silver and copper electrodeposition processes at high overpotentials. The pine-like dendrites constructed from the corncob-like forms, which are very similar to each other, were obtained by electrodeposition of these metals at the overpotential belonging to the plateaus of the limiting diffusion current density. A completely different situation was observed by the electrodeposition of silver and copper at the overpotential outside the plateaus of the limiting diffusion current density in the zone with the fast increase in current density with the overpotential. Silver dendrites, which were very similar to silver and copper dendrites obtained inside the plateaus of the limiting diffusion current density, were obtained at the overpotential outside the plateau. Due to the lower overpotential for hydrogen evolution for copper, hydrogen produced during ...the copper electrodeposition process strongly affected the surface morphology of copper. The same shape polarization curves with completely different surface morphologies of Cu and Ag electrodeposited at overpotentials after the inflection point clearly indicate the importance of morphological analysis in the investigation of polarization characteristics of the electrodeposition systems. The role of hydrogen as a crucial parameter in the continuous change of copper surface morphology from dendrites to honeycomb-like structures was investigated in detail. On the basis of this analysis, the transitional character of the intermediate metals between the normal and inert metals was considered. The typical powder forms characterising electrodeposition of the intermediate metals were also defined and systematized.
Кључне речи:
electrodeposition / copper / silver / dendrite / hydrogen / pores / cauliflower-like formsИзвор:
Macedonian Journal of Chemistry and Chemical Engineering, 2014, 33, 2Издавач:
- Macedonian Journal of Chemistry and Chemical Engineering
Финансирање / пројекти:
- Електрохемијска синтеза и карактеризација наноструктурираних функционалних материјала за примену у новим технологијама (RS-MESTD-Basic Research (BR or ON)-172046)
Институција/група
IHTMTY - JOUR AU - Nikolić, Nebojša D. AU - Živković, Predrag M. AU - Jokić, Bojan AU - Pavlović, Miomir AU - Stevanović, Jasmina PY - 2014 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/1482 AB - The polarization and morphological characteristics of powder forms of the group of the intermediate metals were examined by the analysis of silver and copper electrodeposition processes at high overpotentials. The pine-like dendrites constructed from the corncob-like forms, which are very similar to each other, were obtained by electrodeposition of these metals at the overpotential belonging to the plateaus of the limiting diffusion current density. A completely different situation was observed by the electrodeposition of silver and copper at the overpotential outside the plateaus of the limiting diffusion current density in the zone with the fast increase in current density with the overpotential. Silver dendrites, which were very similar to silver and copper dendrites obtained inside the plateaus of the limiting diffusion current density, were obtained at the overpotential outside the plateau. Due to the lower overpotential for hydrogen evolution for copper, hydrogen produced during the copper electrodeposition process strongly affected the surface morphology of copper. The same shape polarization curves with completely different surface morphologies of Cu and Ag electrodeposited at overpotentials after the inflection point clearly indicate the importance of morphological analysis in the investigation of polarization characteristics of the electrodeposition systems. The role of hydrogen as a crucial parameter in the continuous change of copper surface morphology from dendrites to honeycomb-like structures was investigated in detail. On the basis of this analysis, the transitional character of the intermediate metals between the normal and inert metals was considered. The typical powder forms characterising electrodeposition of the intermediate metals were also defined and systematized. PB - Macedonian Journal of Chemistry and Chemical Engineering T2 - Macedonian Journal of Chemistry and Chemical Engineering T1 - Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals VL - 33 IS - 2 UR - https://hdl.handle.net/21.15107/rcub_cer_1482 ER -
@article{ author = "Nikolić, Nebojša D. and Živković, Predrag M. and Jokić, Bojan and Pavlović, Miomir and Stevanović, Jasmina", year = "2014", abstract = "The polarization and morphological characteristics of powder forms of the group of the intermediate metals were examined by the analysis of silver and copper electrodeposition processes at high overpotentials. The pine-like dendrites constructed from the corncob-like forms, which are very similar to each other, were obtained by electrodeposition of these metals at the overpotential belonging to the plateaus of the limiting diffusion current density. A completely different situation was observed by the electrodeposition of silver and copper at the overpotential outside the plateaus of the limiting diffusion current density in the zone with the fast increase in current density with the overpotential. Silver dendrites, which were very similar to silver and copper dendrites obtained inside the plateaus of the limiting diffusion current density, were obtained at the overpotential outside the plateau. Due to the lower overpotential for hydrogen evolution for copper, hydrogen produced during the copper electrodeposition process strongly affected the surface morphology of copper. The same shape polarization curves with completely different surface morphologies of Cu and Ag electrodeposited at overpotentials after the inflection point clearly indicate the importance of morphological analysis in the investigation of polarization characteristics of the electrodeposition systems. The role of hydrogen as a crucial parameter in the continuous change of copper surface morphology from dendrites to honeycomb-like structures was investigated in detail. On the basis of this analysis, the transitional character of the intermediate metals between the normal and inert metals was considered. The typical powder forms characterising electrodeposition of the intermediate metals were also defined and systematized.", publisher = "Macedonian Journal of Chemistry and Chemical Engineering", journal = "Macedonian Journal of Chemistry and Chemical Engineering", title = "Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals", volume = "33", number = "2", url = "https://hdl.handle.net/21.15107/rcub_cer_1482" }
Nikolić, N. D., Živković, P. M., Jokić, B., Pavlović, M.,& Stevanović, J.. (2014). Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals. in Macedonian Journal of Chemistry and Chemical Engineering Macedonian Journal of Chemistry and Chemical Engineering., 33(2). https://hdl.handle.net/21.15107/rcub_cer_1482
Nikolić ND, Živković PM, Jokić B, Pavlović M, Stevanović J. Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals. in Macedonian Journal of Chemistry and Chemical Engineering. 2014;33(2). https://hdl.handle.net/21.15107/rcub_cer_1482 .
Nikolić, Nebojša D., Živković, Predrag M., Jokić, Bojan, Pavlović, Miomir, Stevanović, Jasmina, "Comparative analysis of the polarization and morphological characteristics of electrochemically produced powder forms of the intermediate metals" in Macedonian Journal of Chemistry and Chemical Engineering, 33, no. 2 (2014), https://hdl.handle.net/21.15107/rcub_cer_1482 .