Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries
A comprehensive, three-dimensional, macro-scale model was developed to simulate non-aqueous deep eutectic solvent (DES) electrolyte flow batteries. The model’s feasibility was validated by comparing the simulated polarization data with the experimental results. Utilizing this model, the work reporte...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
|
| Series: | Batteries |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2313-0105/11/1/18 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832589101238321152 |
|---|---|
| author | Zhiyuan Xiao Ruiping Zhang Mengyue Lu Qiang Ma Zhuo Li Huaneng Su Huanhuan Li Qian Xu |
| author_facet | Zhiyuan Xiao Ruiping Zhang Mengyue Lu Qiang Ma Zhuo Li Huaneng Su Huanhuan Li Qian Xu |
| author_sort | Zhiyuan Xiao |
| collection | DOAJ |
| description | A comprehensive, three-dimensional, macro-scale model was developed to simulate non-aqueous deep eutectic solvent (DES) electrolyte flow batteries. The model’s feasibility was validated by comparing the simulated polarization data with the experimental results. Utilizing this model, the work reported here compared the flow characteristics and electrochemical properties of electrolytes with different redox couples within the porous electrodes of the batteries. Despite variations in the active materials, the distribution of the electrolyte flow rate showed uniformity due to consistent electrode and flow channel designs, indicating that the structural design of electrodes and channels has a more significant impact on electrolyte flow than the physicochemical properties of the electrolytes themselves. This study also highlighted that TEMPO and Quinoxaline DES electrolytes exhibited less flow resistance and more uniform concentration distributions, which helped reduce overpotentials and enhance battery energy efficiency. Furthermore, this research identified that the highest average overpotentials occurred near the membrane for all the redox couples, demonstrating that electrochemical reactions in DES electrolyte flow batteries primarily occur in the region close to the membrane. This finding underscores the importance of optimizing active redox ions transport in electrolytes to enhance electrochemical reactions in the proximal membrane region, which is crucial for improving flow battery performance. |
| format | Article |
| id | doaj-art-27e7c7eceb2540eebac9dcdf340a7aad |
| institution | Kabale University |
| issn | 2313-0105 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj-art-27e7c7eceb2540eebac9dcdf340a7aad2025-01-24T13:22:25ZengMDPI AGBatteries2313-01052025-01-011111810.3390/batteries11010018Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow BatteriesZhiyuan Xiao0Ruiping Zhang1Mengyue Lu2Qiang Ma3Zhuo Li4Huaneng Su5Huanhuan Li6Qian Xu7Institute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaAutomotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaA comprehensive, three-dimensional, macro-scale model was developed to simulate non-aqueous deep eutectic solvent (DES) electrolyte flow batteries. The model’s feasibility was validated by comparing the simulated polarization data with the experimental results. Utilizing this model, the work reported here compared the flow characteristics and electrochemical properties of electrolytes with different redox couples within the porous electrodes of the batteries. Despite variations in the active materials, the distribution of the electrolyte flow rate showed uniformity due to consistent electrode and flow channel designs, indicating that the structural design of electrodes and channels has a more significant impact on electrolyte flow than the physicochemical properties of the electrolytes themselves. This study also highlighted that TEMPO and Quinoxaline DES electrolytes exhibited less flow resistance and more uniform concentration distributions, which helped reduce overpotentials and enhance battery energy efficiency. Furthermore, this research identified that the highest average overpotentials occurred near the membrane for all the redox couples, demonstrating that electrochemical reactions in DES electrolyte flow batteries primarily occur in the region close to the membrane. This finding underscores the importance of optimizing active redox ions transport in electrolytes to enhance electrochemical reactions in the proximal membrane region, which is crucial for improving flow battery performance.https://www.mdpi.com/2313-0105/11/1/18flow batteriesnumerical simulationredox couplesflow dynamicselectrochemical performance |
| spellingShingle | Zhiyuan Xiao Ruiping Zhang Mengyue Lu Qiang Ma Zhuo Li Huaneng Su Huanhuan Li Qian Xu Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries Batteries flow batteries numerical simulation redox couples flow dynamics electrochemical performance |
| title | Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries |
| title_full | Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries |
| title_fullStr | Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries |
| title_full_unstemmed | Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries |
| title_short | Numerical Simulation of Impact of Different Redox Couples on Flow Characteristics and Electrochemical Performance of Deep Eutectic Solvent Electrolyte Flow Batteries |
| title_sort | numerical simulation of impact of different redox couples on flow characteristics and electrochemical performance of deep eutectic solvent electrolyte flow batteries |
| topic | flow batteries numerical simulation redox couples flow dynamics electrochemical performance |
| url | https://www.mdpi.com/2313-0105/11/1/18 |
| work_keys_str_mv | AT zhiyuanxiao numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT ruipingzhang numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT mengyuelu numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT qiangma numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT zhuoli numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT huanengsu numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT huanhuanli numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries AT qianxu numericalsimulationofimpactofdifferentredoxcouplesonflowcharacteristicsandelectrochemicalperformanceofdeepeutecticsolventelectrolyteflowbatteries |