A complex four-point method for the evaluation of ohmic and faradaic losses within a redox flow battery single-cell

Autor: P. Mazur, J. Mrlik, J. Charvat, J. Pocedic, J. Vrana, J. Dundalek, J. Kosek
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: MethodsX, Vol 6, Iss , Pp 534-539 (2019)
Druh dokumentu: article
ISSN: 2215-0161
DOI: 10.1016/j.mex.2019.03.007
Popis: We propose a complex 4-point method for characterization of flow batteries. The distribution of ohmic and faradaic losses within a single-cell is evaluated from electrochemical impedance spectra and load curves of positive and negative half-cells measured with platinum wire pseudo-reference electrodes positioned in respective electrode compartment. The developed method can be used e.g., for the component screening and in-situ durability studies on single-cell scale. The method was validated on a vanadium redox flow battery single-cell; however, it can be analogically employed for various chemistries of flow battery. • Complex 4-point method for characterization of flow battery single-cell was developed. • Method is based on electrochemical impedance spectra and load curve measurements. • Direct evaluation of ohmic and faradaic losses distribution within battery single-cell by the method. Method name: Four-point characterization of flow battery single-cell, Keywords: Redox flow battery, Electrochemical impedance spectroscopy, Load curve
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