Mohd Rusllim, Mohamed and P. K., Leung and M. H., Sulaiman (2015) Performance Characterization of a Vanadium Redox Flow Battery at Different Operating Parameters under a Standardized Test-Bed System. Applied Energy, 137. pp. 402-412. ISSN 0306-2619. (Published)
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This paper describes the experimental characterization of a 25 cm2 laboratory scale vanadium redox flow battery (V-RFB). The unit cell performance with respect to voltage, coulombic and energy efficiencies under different performance parameters (current densities, operating temperatures, flow rates, electrolyte concentrations and material properties of 5 cm × 5 cm electrodes) are presented. The cell exhibits different characteristics under different operating parameters; the highest energy efficiency is recorded at c.a. 82%, operating at 308 K, 60 mA cm−2 and 3 cm3 s−1 volumetric flow rate for 250 cm3 electrolytes (each reservoir) of 1.6 mol dm−3V(III)/V(IV) in 4 mol dm−3 H2SO4. Formation charge of the mixture of vanadium species into single electro-active species at positive and negative electrodes are presented. Estimated time for the electro-active species to complete the formation charge using electrochemical calculation of Faraday’s constant are presented; a discrepancy of 4.5% is found between the theoretical and experimental data using current density of 80 mA cm−2.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Redox flow battery; Vanadium; Current density; Temperature; Electrolyte flow rates |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Electrical & Electronic Engineering |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 11 Dec 2014 07:25 |
| Last Modified: | 06 Oct 2021 23:51 |
| URI: | http://umpir.ump.edu.my/id/eprint/7495 |
| Download Statistic: | View Download Statistics |
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