Numerical and experimental studies of stack shunt current for vanadium redox flow battery

Cong Yin, Shaoyun Guo, Honglin Fang, Jiayi Liu, Yang Li and Hao Tang

Applied Energy, 2015, vol. 151, issue C, 237-248

Abstract: The stack shunt current of VRB (vanadium redox flow battery) was investigated with experiments and 3D (three-dimensional) simulations. In the proposed model, cell voltages and electrolyte conductivities were calculated based on electrochemical reaction distributions and SOC (state of charge) values, respectively, while coulombic loss was estimated according to shunt current and vanadium ionic crossover through membrane. Shunt current distributions and coulombic efficiency are analyzed in terms of electrolyte conductivities and stack cell numbers. The distributions of cell voltages and shunt currents calculated with proposed model are validated with single cell and short stack tests. The model can be used to optimize VRB stack manifold and channel designs to improve VRB system efficiency.

Keywords: Vanadium redox flow battery; Three-dimensional modeling; Shunt current loss; Cell stack design (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:151:y:2015:i:c:p:237-248

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DOI: 10.1016/j.apenergy.2015.04.080

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