JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

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Impact of heterogeneous electrode design on vanadium redox flow batteries with different flow fields

Author(s): Jie SUN¹, Menglian ZHENG^2, ³, Mengxin YU¹, Jinbo CHEN¹, Jianxin LI¹, Changxing HU¹
Affiliation(s): ¹Institute of Energy and Environment Engineering, NingboTech University, Ningbo, 315100, China ²Institute of Thermal Science and Power Systems, School of Energy Engineering, Zhejiang University, Hangzhou, 310027, China ³State Key Laboratory of Clean Energy Utilization, Hangzhou, 310027, China
Corresponding email(s): Menglian ZHENG, menglian_zheng@zju.edu.cn
Key Words: VRFB; Serpentine flow field; Interdigitated flow field; Heterogeneous electrode design; Carbon paper; Damk?hler number

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Jie SUN¹, Menglian ZHENG^2,³, Mengxin YU¹, Jinbo CHEN¹, Jianxin LI¹, Changxing HU¹. Impact of heterogeneous electrode design on vanadium redox flow batteries with different flow fields[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2500239

@article{title="Impact of heterogeneous electrode design on vanadium redox flow batteries with different flow fields",
author="Jie SUN¹, Menglian ZHENG^2,³, Mengxin YU¹, Jinbo CHEN¹, Jianxin LI¹, Changxing HU¹",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2500239"
}

%0 Journal Article
%T Impact of heterogeneous electrode design on vanadium redox flow batteries with different flow fields
%A Jie SUN¹
%A Menglian ZHENG^2
%A³
%A Mengxin YU¹
%A Jinbo CHEN¹
%A Jianxin LI¹
%A Changxing HU¹
%J Journal of Zhejiang University SCIENCE A
%P
%@ 1673-565X
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/jzus.A2500239"

TY - JOUR
T1 - Impact of heterogeneous electrode design on vanadium redox flow batteries with different flow fields
A1 - Jie SUN¹
A1 - Menglian ZHENG^{2
A1 -}³
A1 - Mengxin YU¹
A1 - Jinbo CHEN¹
A1 - Jianxin LI¹
A1 - Changxing HU¹
J0 - Journal of Zhejiang University Science A
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EP -
%@ 1673-565X
Y1 - in press
PB - Zhejiang University Press & Springer
ER -
doi="https://doi.org/10.1631/jzus.A2500239"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: With the rapid progress of processing technology, the heterogeneous optimization design of porous electrodes is becoming practicable. Nevertheless, there is currently a lack of understanding of the relevant theoretical foundation. In this study, we systematically examined the influence and mechanism of various carbon paper stacking schemes on the performance of vanadium redox flow batteries (VRFBs) with different flow fields (interdigitated flow field, IFF, and serpentine flow field, SFF) through experiments and simulations. We found that the optimization of porous electrode heterogenization showed significant differences. For the IFF, optimizing the porous electrode structure remarkably improved the mass transfer effect near the membrane, thus enhancing the performance of VRFBs. For the SFF, the effectiveness of electrode structure optimization was manifested mainly in improvement of the permeability of the porous electrode. Furthermore, the effectiveness of the heterogeneous design of the porous electrode depended on a balanced relationship between the mass transfer rate of the reactants and the rate of the electrochemical reaction. The Damk?hler number was introduced to measure this balance and serve as a basis for subsequent optimization.

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