TY  - JOUR
AU  - Živković, Luka
AU  - Kandaswamy, Saikrishnan
AU  - Petkovska, Menka
AU  - Vidaković-Koch, Tanja
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4446
AB  - The intensification of an electrochemical process by forced periodic operation was studied for the first time using the computer-aided Nonlinear Frequency Response method. This method enabled the automatic generation of frequency response functions and the DC components (Faradaic rectification) of the cost (overpotential) and benefit (current density) indicators. The case study, oxygen reduction reaction, was investigated both experimentally and theoretically. The results of the cost-benefit indicator analysis show that forced periodic change of electrode potential can be superior when compared to the steady-state regime for specific operational parameters. When the electrode rotation rate is changed periodically, the process will always deteriorate as the dynamic operation will inevitably lead to the thickening of the diffusion layer. This phenomenon is explained both from a mathematical and a physical point of view.
PB  - Frontiers Media Sa, Lausanne
T2  - Frontiers in Chemistry
T1  - Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media
VL  - 8
DO  - 10.3389/fchem.2020.579869
ER  - 

@article{
author = "Živković, Luka and Kandaswamy, Saikrishnan and Petkovska, Menka and Vidaković-Koch, Tanja",
year = "2020",
abstract = "The intensification of an electrochemical process by forced periodic operation was studied for the first time using the computer-aided Nonlinear Frequency Response method. This method enabled the automatic generation of frequency response functions and the DC components (Faradaic rectification) of the cost (overpotential) and benefit (current density) indicators. The case study, oxygen reduction reaction, was investigated both experimentally and theoretically. The results of the cost-benefit indicator analysis show that forced periodic change of electrode potential can be superior when compared to the steady-state regime for specific operational parameters. When the electrode rotation rate is changed periodically, the process will always deteriorate as the dynamic operation will inevitably lead to the thickening of the diffusion layer. This phenomenon is explained both from a mathematical and a physical point of view.",
publisher = "Frontiers Media Sa, Lausanne",
journal = "Frontiers in Chemistry",
title = "Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media",
volume = "8",
doi = "10.3389/fchem.2020.579869"
}

Živković, L., Kandaswamy, S., Petkovska, M.,& Vidaković-Koch, T.. (2020). Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media. in Frontiers in Chemistry
Frontiers Media Sa, Lausanne., 8.
https://doi.org/10.3389/fchem.2020.579869

Živković L, Kandaswamy S, Petkovska M, Vidaković-Koch T. Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media. in Frontiers in Chemistry. 2020;8.
doi:10.3389/fchem.2020.579869 .

Živković, Luka, Kandaswamy, Saikrishnan, Petkovska, Menka, Vidaković-Koch, Tanja, "Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media" in Frontiers in Chemistry, 8 (2020),
https://doi.org/10.3389/fchem.2020.579869 . .

TY  - JOUR
AU  - Kandaswamy, Saikrishnan
AU  - Sorrentino, Antonio
AU  - Borate, Shivangi
AU  - Živković, Luka
AU  - Petkovska, Menka
AU  - Vidaković-Koch, Tanja
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4078
AB  - Oxygen reduction reaction (ORR) was studied on a silver polycrystalline electrode in different NaOH concentrations with a help of rotating disc and rotating ring disc electrodes. Soluble reaction intermediate was detected at all alkaline concentrations, but its concentration increased with an increase of the level of impurities. ORR is not NaOH concentration dependent at low concentrations (0.1 and 1 M). In 11 M NaOH ORR onsets at more positive potentials in the region where underpotential silver oxide formation shows less reversible behaviour. The nonlinear frequency response analysis spectra show significant qualitative difference with NaOH concentration indicating a high capability of this method for kinetic mechanism investigations.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Oxygen reduction reaction on silver electrodes under strong alkaline conditions
VL  - 320
DO  - 10.1016/j.electacta.2019.07.028
ER  - 

@article{
author = "Kandaswamy, Saikrishnan and Sorrentino, Antonio and Borate, Shivangi and Živković, Luka and Petkovska, Menka and Vidaković-Koch, Tanja",
year = "2019",
abstract = "Oxygen reduction reaction (ORR) was studied on a silver polycrystalline electrode in different NaOH concentrations with a help of rotating disc and rotating ring disc electrodes. Soluble reaction intermediate was detected at all alkaline concentrations, but its concentration increased with an increase of the level of impurities. ORR is not NaOH concentration dependent at low concentrations (0.1 and 1 M). In 11 M NaOH ORR onsets at more positive potentials in the region where underpotential silver oxide formation shows less reversible behaviour. The nonlinear frequency response analysis spectra show significant qualitative difference with NaOH concentration indicating a high capability of this method for kinetic mechanism investigations.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Oxygen reduction reaction on silver electrodes under strong alkaline conditions",
volume = "320",
doi = "10.1016/j.electacta.2019.07.028"
}

Kandaswamy, S., Sorrentino, A., Borate, S., Živković, L., Petkovska, M.,& Vidaković-Koch, T.. (2019). Oxygen reduction reaction on silver electrodes under strong alkaline conditions. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 320.
https://doi.org/10.1016/j.electacta.2019.07.028

Kandaswamy S, Sorrentino A, Borate S, Živković L, Petkovska M, Vidaković-Koch T. Oxygen reduction reaction on silver electrodes under strong alkaline conditions. in Electrochimica Acta. 2019;320.
doi:10.1016/j.electacta.2019.07.028 .

Kandaswamy, Saikrishnan, Sorrentino, Antonio, Borate, Shivangi, Živković, Luka, Petkovska, Menka, Vidaković-Koch, Tanja, "Oxygen reduction reaction on silver electrodes under strong alkaline conditions" in Electrochimica Acta, 320 (2019),
https://doi.org/10.1016/j.electacta.2019.07.028 . .