Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range
Autori
Berkesi, KataŽivković, Predrag M.
Elezović, Nevenka
Lačnjevac, Uroš
Hristoforou, Evangelos
Nikolić, Nebojša D.
Članak u časopisu (Recenzirana verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current dens...ity, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.
Ključne reči:
Copper / Reversing current (RC) regime / Scanning electron microscope (SEM) / Optical microscope (OM) / ElectrodepositionIzvor:
Journal of Electroanalytical Chemistry, 2019, 833, 401-410Izdavač:
- Elsevier
Finansiranje / projekti:
- Elektrohemijska sinteza i karakterizacija nanostrukturiranih funkcionalnih materijala za primenu u novim tehnologijama (RS-MESTD-Basic Research (BR or ON)-172046)
- COST Action MP1407-STSM grant ECOST-STSM-MP1407-39458
Napomena:
- This is peer-reviewed version of the article: Journal of Electroanalytical Chemistry, 2019, 833, 401-410, https://doi.org/10.1016/j.jelechem.2018.12.021
- http://cer.ihtm.bg.ac.rs/handle/123456789/2986
DOI: 10.1016/j.jelechem.2018.12.021
ISSN: 1572-6657
WoS: 000456759900048
Scopus: 2-s2.0-85058668102
Institucija/grupa
IHTMTY - JOUR AU - Berkesi, Kata AU - Živković, Predrag M. AU - Elezović, Nevenka AU - Lačnjevac, Uroš AU - Hristoforou, Evangelos AU - Nikolić, Nebojša D. PY - 2019 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2987 AB - Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed. PB - Elsevier T2 - Journal of Electroanalytical Chemistry T1 - Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range VL - 833 SP - 401 EP - 410 DO - 10.1016/j.jelechem.2018.12.021 ER -
@article{ author = "Berkesi, Kata and Živković, Predrag M. and Elezović, Nevenka and Lačnjevac, Uroš and Hristoforou, Evangelos and Nikolić, Nebojša D.", year = "2019", abstract = "Electrodeposition of copper in the hydrogen co-deposition range by the regime of reversing current (RC) in the second range has been investigated by determination of the average current efficiency for hydrogen evolution reaction and by scanning electron (SEM) and optical (OM) microscopic analysis of the obtained deposits. Keeping the cathodic current density, the cathodic and the anodic pulses constant in all experiments, the anodic current density (ja) values were varied: 40, 80, 160, 240 and 320 mA cm−2. The Cu deposits produced by the RC regimes with different anodic current density values were compared with that obtained in a constant galvanostatic regime (DC) at the current density equal to the cathodic current density in the RC regimes. The honeycomb-like structures were formed in the DC regime and by the RC regimes with ja of 40 and 80 mA cm−2. The hole size in them was in the 60–70 μm range. Due to the decrease of quantity of evolved hydrogen with increasing anodic current density, the larger dish-like holes with dendrites at their bottom and shoulder were formed with ja values of 160, 240 and 320 mA cm−2. The maximum number of holes, and hence, the largest specific surface area of the honeycomb-like electrodes was obtained with ja = 80 mA cm−2, that can be ascribed to a suppression of coalescence of neighboring hydrogen bubbles. Application of the RC regime also led to the increase of uniformity of structures, what is concluded by cross section analysis of the formed honeycomb-like electrodes. For the first time, mechanism of Cu electrodeposition in the hydrogen co-deposition range by the RC regime in the second range was proposed and discussed.", publisher = "Elsevier", journal = "Journal of Electroanalytical Chemistry", title = "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range", volume = "833", pages = "401-410", doi = "10.1016/j.jelechem.2018.12.021" }
Berkesi, K., Živković, P. M., Elezović, N., Lačnjevac, U., Hristoforou, E.,& Nikolić, N. D.. (2019). Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry Elsevier., 833, 401-410. https://doi.org/10.1016/j.jelechem.2018.12.021
Berkesi K, Živković PM, Elezović N, Lačnjevac U, Hristoforou E, Nikolić ND. Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range. in Journal of Electroanalytical Chemistry. 2019;833:401-410. doi:10.1016/j.jelechem.2018.12.021 .
Berkesi, Kata, Živković, Predrag M., Elezović, Nevenka, Lačnjevac, Uroš, Hristoforou, Evangelos, Nikolić, Nebojša D., "Mechanism of formation of the honeycomb-like structures by the regime of the reversing current (RC) in the second range" in Journal of Electroanalytical Chemistry, 833 (2019):401-410, https://doi.org/10.1016/j.jelechem.2018.12.021 . .