LAPSE:2023.19598
Published Article
LAPSE:2023.19598
Physicochemical and Electrochemical Characterization of Vanadium Electrolyte Prepared with Different Grades of V2O5 Raw Materials
March 9, 2023
Abstract
The physicochemical and electrochemical performance of electrolytes prepared with different grades of V2O5 raw materials were investigated systematically for a vanadium redox flow battery. Physicochemical tests showed that the conductivity of electrolytes prepared with lower grades of V2O5 raw materials obviously decreased, while the viscosity increased. The results of electrochemical experiments showed that the electrochemical activity and reversibility of electrolytes decreased, and the solution resistance increased obviously, as the grade of V2O5 raw materials gradually decreased. In addition, the battery efficiency and chargeādischarge capacity were negatively affected by impurities in the lower grade V2O5 raw materials, due to an increase of polarization on the chargeādischarge voltage. Moreover, the performance of electrolytes was related to the total concentration of impurities in the electrolyte, and Na, K impurity ions were the main factors that adversely affected the electrochemical activity and reversibility, mass transfer, and capacity of the electrolytes. Based on the economic analysis, the impurities in V2O5 raw materials would not only reduce the performance of electrolytes, but also affect the production costs of electrolytes and the economic profits. Through this fundamental research, people can better understand the influence of V2O5 raw materials on electrolyte properties, and direct more attention to research how to effectively use lower grade V2O5 raw materials to reduce the costs of electrolyte preparation.
The physicochemical and electrochemical performance of electrolytes prepared with different grades of V2O5 raw materials were investigated systematically for a vanadium redox flow battery. Physicochemical tests showed that the conductivity of electrolytes prepared with lower grades of V2O5 raw materials obviously decreased, while the viscosity increased. The results of electrochemical experiments showed that the electrochemical activity and reversibility of electrolytes decreased, and the solution resistance increased obviously, as the grade of V2O5 raw materials gradually decreased. In addition, the battery efficiency and chargeādischarge capacity were negatively affected by impurities in the lower grade V2O5 raw materials, due to an increase of polarization on the chargeādischarge voltage. Moreover, the performance of electrolytes was related to the total concentration of impurities in the electrolyte, and Na, K impurity ions were the main factors that adversely affected the electrochemical activity and reversibility, mass transfer, and capacity of the electrolytes. Based on the economic analysis, the impurities in V2O5 raw materials would not only reduce the performance of electrolytes, but also affect the production costs of electrolytes and the economic profits. Through this fundamental research, people can better understand the influence of V2O5 raw materials on electrolyte properties, and direct more attention to research how to effectively use lower grade V2O5 raw materials to reduce the costs of electrolyte preparation.
Record ID
Keywords
electrochemical performance, electrolyte preparation, grade of V2O5 raw materials, impurity ions, vanadium redox flow battery
Subject
Suggested Citation
Ding M, Liu T, Zhang Y, Liu H, Pan D, Chen L. Physicochemical and Electrochemical Characterization of Vanadium Electrolyte Prepared with Different Grades of V2O5 Raw Materials. (2023). LAPSE:2023.19598
Author Affiliations
Ding M: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie [ORCID]
Liu T: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Zhang Y: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Liu H: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Pan D: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Chen L: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Liu T: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Zhang Y: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Liu H: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Pan D: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Chen L: School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Wuhan University of Scie
Journal Name
Energies
Volume
14
Issue
18
First Page
5958
Year
2021
Publication Date
2021-09-20
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en14185958, Publication Type: Journal Article
Record Map
Published Article
LAPSE:2023.19598
This Record
External Link
https://doi.org/10.3390/en14185958
Publisher Version
Download
Meta
Record Statistics
Record Views
218
Version History
[v1] (Original Submission)
Mar 9, 2023
Verified by curator on
Mar 9, 2023
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2023.19598
Record Owner
Auto Uploader for LAPSE
Links to Related Works