Evaluation of Electrochemical Process Improvement Using the Computer-Aided Nonlinear Frequency Response Method: Oxygen Reduction Reaction in Alkaline Media
| Autor: | Luka A. Živković, Saikrishnan Kandaswamy, Menka Petkovska, Tanja Vidaković-Koch |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Frontiers in Chemistry, Vol 8 (2020) |
| Druh dokumentu: | article |
| ISSN: | 2296-2646 18678351 |
| DOI: | 10.3389/fchem.2020.579869 |
| Popis: | 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. |
| Databáze: | Directory of Open Access Journals |
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