JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Study of the effect of flow frames on the performance of a 10 kW 40 kWh vanadium redox flow battery using a multi-scale model

Author(s): Junhong LIN¹, Zihao MA², Shaojun LIU¹, Hao SONG¹, Guoneng LI³, Weihong WU¹, Chenghang ZHENG¹, Xiang GAO¹
Affiliation(s): ¹State Key Laboratory of Clean Energy Utilization, State Environmental Protection Center for Coal-Fired Air Pollution Control, Zhejiang University, Hangzhou 310027, China; more
Corresponding email(s): phoenix205@zju.edu.cn
Key Words: Flow frames; All vanadium redox flow battery; Multi-scale model; Genetic algorithm; Battery efficiency

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Junhong LIN¹, Zihao MA², Shaojun LIU¹, Hao SONG¹, Guoneng LI³, Weihong WU¹, Chenghang ZHENG¹, Xiang GAO¹. Study of the effect of flow frames on the performance of a 10 kW 40 kWh vanadium redox flow battery using a multi-scale model[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2400544

@article{title="Study of the effect of flow frames on the performance of a 10 kW 40 kWh vanadium redox flow battery using a multi-scale model",
author="Junhong LIN¹, Zihao MA², Shaojun LIU¹, Hao SONG¹, Guoneng LI³, Weihong WU¹, Chenghang ZHENG¹, Xiang GAO¹",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2400544"
}

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%T Study of the effect of flow frames on the performance of a 10 kW 40 kWh vanadium redox flow battery using a multi-scale model
%A Junhong LIN¹
%A Zihao MA²
%A Shaojun LIU¹
%A Hao SONG¹
%A Guoneng LI³
%A Weihong WU¹
%A Chenghang ZHENG¹
%A Xiang GAO¹
%J Journal of Zhejiang University SCIENCE A
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doi="https://doi.org/10.1631/jzus.A2400544"

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T1 - Study of the effect of flow frames on the performance of a 10 kW 40 kWh vanadium redox flow battery using a multi-scale model
A1 - Junhong LIN¹
A1 - Zihao MA²
A1 - Shaojun LIU¹
A1 - Hao SONG¹
A1 - Guoneng LI³
A1 - Weihong WU¹
A1 - Chenghang ZHENG¹
A1 - Xiang GAO¹
J0 - Journal of Zhejiang University Science A
SP -
EP -
%@ 1673-565X
Y1 - in press
PB - Zhejiang University Press & Springer
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doi="https://doi.org/10.1631/jzus.A2400544"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: The cell structure in vanadium redox flow batteries (VRFBs) critically impacts battery efficiency. Therefore, in this study we evaluate the effect of different flow frames on VFRB cell performance and system efficiency. This is accomplished through a multi-scale model combining a 3D model of the cell and an equivalent circuit model (ECM) of the stack. The results reveal that during the discharge process, increasing the flow rate can boost the discharge voltage, but also leads to higher pumping power consumption. Moreover, the pressure drop of the cell decreases as the number of flow frame channels increases. Due to improved reactant concentration distribution, the five-channel flow frame has a higher discharge voltage than other configurations at low reactant concentrations, even exceeding that of the twenty-channel flow frame. The flow frame structure and flow rate were optimized for a 10kW/40kWh VRFB with a genetic algorithm approach. Using a five-channel flow frame, a peak discharge efficiency of 93.70% was obtained at a flow rate of 960 mL/min. The results of this study may aid future design of kilowatt-scale VRFBs.

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