A response time-based method to operando decouple the polarizations in redox flow batteries

Wang，Zhenyu1; Li，Yiju2; Ren，Jiayou1; Sun，Jing1; Wang，Tianshuai3; Liu，Bin1; Fan，Xinzhuang1; Zhao，Tianshou1,2

2023-05-17

10.1016/j.xcrp.2023.101395

Cell Reports Physical Science   影响因子和分区

2666-3864

The polarization of redox flow batteries (RFBs) consists of activation polarization, ohmic polarization, and concentration polarization. However, the three types of polarizations are coupled in practice, making it difficult to quantify the respective attributions to the total voltage loss and to compare the reported performance of RFBs under different working conditions. Here, we propose a method to operando decouple the polarizations of RFBs based on the different response times of the three kinds of polarizations. The decoupled polarizations in RFBs under different working conditions are presented with specific voltage losses, which clarifies the limit parameters of battery performance and makes the reports of RFBs comparable even with similar battery performances. This work opens up a method to quantitatively analyze activation polarization and concentration polarization separately in RFBs, which provides significant guidance for improving battery performance effectively.

activation polarization concentration polarization operando decouple polarizations quantitatively analyze redox flow batteries response time-based method working conditions

SCI

英语

通讯

Natural Science Foundation of Guangdong Province[2021A1515011821];

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Multidisciplinary

WOS:001044182000001

CELL PRESS

2-s2.0-85158069492

Scopus

1.Department of Mechanical and Aerospace Engineering,The Hong Kong University of Science and Technology,Kowloon,Clear Water Bay, Hong Kong,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Department of Chemistry and Chemical Engineering,Northwestern Polytechnical University,Xi'an,710129,China

Wang，Zhenyu,Li，Yiju,Ren，Jiayou,et al. A response time-based method to operando decouple the polarizations in redox flow batteries[J]. Cell Reports Physical Science,2023,4(5).

Wang，Zhenyu.,Li，Yiju.,Ren，Jiayou.,Sun，Jing.,Wang，Tianshuai.,...&Zhao，Tianshou.(2023).A response time-based method to operando decouple the polarizations in redox flow batteries.Cell Reports Physical Science,4(5).

Wang，Zhenyu,et al."A response time-based method to operando decouple the polarizations in redox flow batteries".Cell Reports Physical Science 4.5(2023).