Mechanics & Industry
Volume 17, Number 4, 2016
|Number of page(s)||12|
|Published online||23 May 2016|
A transient model of vanadium redox flow battery
Department of Mechanical Engineering, Iranian Research Organization for Science and Technology
(IROST), P.O. Box
2 Chemical Engineering Department, Sharif University of Technology, Tehran, Iran
a Corresponding author: email@example.com
Received: 11 September 2014
Accepted: 1 October 2015
It has been attempted to gain a new viewpoint in transient cell modeling of vanadium redox flow battery. This has been achieved by considering electrochemical relations along with conceptual electrical circuit of this kind of battery. The redox flow battery is one of the best rechargeable batteries because of its capability to average loads and output power sources. A model of transient behavior is presented in this paper. The transient features are considered as the most remarkable characteristics of the battery. The chemical reactions, fluid flow, and electrical circuit of the structure govern the dynamics. The transient behavior of the redox flow battery based on chemical reactions is discussed in this paper. According to the model responses, the relation between electrolyte concentration changes and the battery cell with current density has been studied in transient state and the rate of state of charge changes has been achieved. Sensitivity analysis based on the presented model indicated that the battery voltage highly depends on the concentration amount of reactants. In addition the negative effect of the operation temperature increases on one hand and the effect of electrolyte fluid flow rate on the other hand have been noticed on output voltage of the cell.
Key words: Vanadium redox flow battery / transient model / concentration / porous electrode / electrolyte solution
© AFM, EDP Sciences 2016
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