Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications
Vanadium redox flow batteries (VRFBs) operate effectively over the temperature range of 10 °C to 40 °C. However, their performance is significantly compromised at low operating temperatures, which may happen in cold climatic conditions. The loss of performance can be attributed to reduced kinetics a...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/9/7/374 |
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| author | Praphulla Rao Sreenivas Jayanti |
| author_facet | Praphulla Rao Sreenivas Jayanti |
| author_sort | Praphulla Rao |
| collection | DOAJ |
| description | Vanadium redox flow batteries (VRFBs) operate effectively over the temperature range of 10 °C to 40 °C. However, their performance is significantly compromised at low operating temperatures, which may happen in cold climatic conditions. The loss of performance can be attributed to reduced kinetics and decreased diffusivity of ions in the electrolyte. In this paper, we present a physics-based electrochemical model of a vanadium redox flow battery that allows temperature-related corrections to be incorporated at a fundamental level, thereby extending its prediction capability to low temperatures. The model follows the conventional evaluation of the cell overpotential as the sum of contributions from overpotentials associated with activation, ionic conduction and mass transfer polarization. New data-driven models have been proposed to make these sub-models temperature sensitive. The overall model has been validated with a wide range of data from VRFB cells of sizes up to 900 cm<sup>2</sup> and operating temperatures down to −10 °C. The model results indicate that enhancement of electrochemical performance of VRFB below subzero temperatures requires electrode and membrane activation and improvement in ionic conductivity of the electrolyte. |
| first_indexed | 2024-03-11T01:18:41Z |
| format | Article |
| id | doaj.art-7e972a7e98d64ae99e1838e74cca00ec |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-11T01:18:41Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-7e972a7e98d64ae99e1838e74cca00ec2023-11-18T18:19:04ZengMDPI AGBatteries2313-01052023-07-019737410.3390/batteries9070374Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature ApplicationsPraphulla Rao0Sreenivas Jayanti1Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaDepartment of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, IndiaVanadium redox flow batteries (VRFBs) operate effectively over the temperature range of 10 °C to 40 °C. However, their performance is significantly compromised at low operating temperatures, which may happen in cold climatic conditions. The loss of performance can be attributed to reduced kinetics and decreased diffusivity of ions in the electrolyte. In this paper, we present a physics-based electrochemical model of a vanadium redox flow battery that allows temperature-related corrections to be incorporated at a fundamental level, thereby extending its prediction capability to low temperatures. The model follows the conventional evaluation of the cell overpotential as the sum of contributions from overpotentials associated with activation, ionic conduction and mass transfer polarization. New data-driven models have been proposed to make these sub-models temperature sensitive. The overall model has been validated with a wide range of data from VRFB cells of sizes up to 900 cm<sup>2</sup> and operating temperatures down to −10 °C. The model results indicate that enhancement of electrochemical performance of VRFB below subzero temperatures requires electrode and membrane activation and improvement in ionic conductivity of the electrolyte.https://www.mdpi.com/2313-0105/9/7/374redox flow batteryelectrochemical performancetemperature sensitivitymodellingoverpotentialcharge transfer resistance |
| spellingShingle | Praphulla Rao Sreenivas Jayanti Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications Batteries redox flow battery electrochemical performance temperature sensitivity modelling overpotential charge transfer resistance |
| title | Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications |
| title_full | Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications |
| title_fullStr | Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications |
| title_full_unstemmed | Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications |
| title_short | Physics-Based Electrochemical Model of Vanadium Redox Flow Battery for Low-Temperature Applications |
| title_sort | physics based electrochemical model of vanadium redox flow battery for low temperature applications |
| topic | redox flow battery electrochemical performance temperature sensitivity modelling overpotential charge transfer resistance |
| url | https://www.mdpi.com/2313-0105/9/7/374 |
| work_keys_str_mv | AT praphullarao physicsbasedelectrochemicalmodelofvanadiumredoxflowbatteryforlowtemperatureapplications AT sreenivasjayanti physicsbasedelectrochemicalmodelofvanadiumredoxflowbatteryforlowtemperatureapplications |