Unveiling electrode compression impact on vanadium flow battery from polarization perspective via a symmetric cell configuration

doi:10.1016/j.jpowsour.2020.228816

IMR OpenIR

	Unveiling electrode compression impact on vanadium flow battery from polarization perspective via a symmetric cell configuration
	Zhang, Kaiyue; Yan, Chuanwei; Tang, Ao
	2020-12-15
发表期刊	JOURNAL OF POWER SOURCES
卷号	479
摘要	Full commercialization of vanadium flow batteries requires a high current density operation. However, this can be only realized when associated large polarizations of the cell are properly reduced. Of all the cell components, the porous electrode plays a critical role in determining cell polarizations since it directly relates to each of the polarizations. Despite that, an in-depth understanding of electrode compression impact on polarizations of a flow cell is still limited in literature. In this work, a quantitatively experimental study to unveil the electrode compression impact on each of the polarizations as well as the performance of a vanadium flow cell is conducted by employing a symmetric cell configuration. Four different compression ratios are investigated by both ex-situ characterizations and in-situ symmetric cell tests, which successfully reveal its influence on activation, ohmic and concentration polarizations at varied operating current densities. Charge-discharge cycling tests further prove the significance of electrode compression to both efficiency and discharge capacity, while also delivering an optimal compression ratio for the investigated flow cell. Such a quantitative analysis not only promotes a deep understanding of the importance of electrode compression to cell performance, but is also of vital importance for stack design and optimization in practice.
DOI	10.1016/j.jpowsour.2020.228816
WOS记录号	WOS:000593843100005
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155642
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Zhang, Kaiyue,Yan, Chuanwei,Tang, Ao. Unveiling electrode compression impact on vanadium flow battery from polarization perspective via a symmetric cell configuration[J]. JOURNAL OF POWER SOURCES,2020,479.
APA	Zhang, Kaiyue,Yan, Chuanwei,&Tang, Ao.(2020).Unveiling electrode compression impact on vanadium flow battery from polarization perspective via a symmetric cell configuration.JOURNAL OF POWER SOURCES,479.
MLA	Zhang, Kaiyue,et al."Unveiling electrode compression impact on vanadium flow battery from polarization perspective via a symmetric cell configuration".JOURNAL OF POWER SOURCES 479(2020).