Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media
Апстракт
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.
Кључне речи:
forced periodic operation / silver rotating disc electrode / faradaic rectification / process intensification / cost– / benefit indicator analysis / DC nonperiodic component / cNFR software / frequency domainИзвор:
Frontiers in Chemistry, 2020, 8Издавач:
- Frontiers Media Sa, Lausanne
Финансирање / пројекти:
- German Research Foundation (Deutsche Forschungsgemeinschaft, DFG)German Research Foundation (DFG) [VI 845/1-1, VI845/1-2]
- Развој ефикаснијих хемијско-инжењерских процеса заснован на истраживањима феномена преноса и принципима интензификације процеса (RS-MESTD-Basic Research (BR or ON)-172022)
DOI: 10.3389/fchem.2020.579869
ISSN: 2296-2646
PubMed: 33240844
WoS: 000590522600001
Scopus: 2-s2.0-85094677281
Институција/група
Tehnološko-metalurški fakultetTY - 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 . .