Mass Transfer Behaviors and Battery Performance of a Ferrocyanide-Based Organic Redox Flow Battery with Different Electrode Shapes

Pengfei Zhang, Xi Liu, Junjie Fu and Fengming Chu ()
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Pengfei Zhang: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Xi Liu: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Junjie Fu: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
Fengming Chu: College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Energies, 2023, vol. 16, issue 6, 1-17

Abstract: The ferrocyanide-based organic redox flow battery (ferrocyanide-based ORFB), based on electrochemistry, has become a potential energy storage technology due to its low price, eco-friendliness, safety, and convenience. However, its low efficiency and poor mass transfer performance hinder the application of the ORFB. The influence of the electrode shape (trapezoid, sector, and rectangle) on the mass transfer and battery performance are studied based on a numerical model, which is verified by the experiments. The results show that battery performance of the trapezoid electrode is better than that of the sector and rectangle electrode. The discharge voltage of the rectangle battery is the lowest, and the discharge voltage of the trapezoid battery is the highest. The discharge voltage of the rectangle battery is 4.47% lower than that of the trapezoid battery. The uniformity factor value of the trapezoid battery is 26.9% higher than that of the rectangle battery. The trapezoid shape is the best design for the electrode, contributing to the application of the ferrocyanide-based ORFBs.

Keywords: energy storage; numerical model; discharge voltage; electrode shape; mass transfer (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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