Regulating flow field design on carbon felt electrode towards high power density operation of vanadium flow batteries

doi:10.1016/j.cej.2022.138170

IMR OpenIR

	Regulating flow field design on carbon felt electrode towards high power density operation of vanadium flow batteries
	Hao, Huanhuan 1,2; Zhang, Qi-an 1; Feng, Ziyang 3; Tang, Ao 1
通讯作者	Feng, Ziyang(ziyang.feng.d@chnenergy.com.cn) ; Tang, Ao(a.tang@imr.ac.cn)
	2022-12-15
发表期刊	CHEMICAL ENGINEERING JOURNAL
ISSN	1385-8947
卷号	450 页码:10
摘要	Flow batteries promise a great practice to integrate with renewable energy sources in electric grid applications. However, high power density operation of flow batteries remains a challenge due to mass transport limitation and flow resistance in porous carbon felt electrode, which urges the need of advanced flow design to synergistically lower concentration polarization and reduce pressure drop. Herein, we realize a remarkably enhanced power density operation for vanadium flow batteries by regulating flow field design on carbon felt electrodes. Finite element analyses firstly reveal significantly reduced pressure drop, well-distributed reactant and promoted flow velocity on carbon felts with parallel and interdigitated flow designs. On the basis of measured local mass transfer coefficients, both interdigitated and parallel based felts exhibit a notable reduction in simulated concentration polarization at 200 mA cm-2 with parallel flow outperforming interdigitated design. Experimental validations further confirm a superior voltage efficiency of 78 % and significantly enhanced discharge capacity at 200 mA cm-2 for the flow cell adopting parallel based felts. Finally, dynamic modelling and simulation of an industrial-scale 32 kW stack highlight a desirable system efficiency of ca. 70 % for the parallel flow felt design at 200 mA cm-2, signifying a great potential of regulating flow field on carbon felts for design and scale-up of practical flow battery stacks.
关键词	Vanadium flow battery High power stack Flow field design Felt electrode Pressure drop Finite element analysis
资助者	Natural Science Foundation of Liaoning Province ; Chinese Energy Group Science and Technology Innovation
DOI	10.1016/j.cej.2022.138170
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Liaoning Province[2020 -MS -012] ; Chinese Energy Group Science and Technology Innovation
WOS研究方向	Engineering
WOS类目	Engineering, Environmental ; Engineering, Chemical
WOS记录号	WOS:000862460000001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：26[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/321006/175825
专题	中国科学院金属研究所
通讯作者	Feng, Ziyang; Tang, Ao
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Natl Inst Clean and Low Carbon Energy, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Hao, Huanhuan,Zhang, Qi-an,Feng, Ziyang,et al. Regulating flow field design on carbon felt electrode towards high power density operation of vanadium flow batteries[J]. CHEMICAL ENGINEERING JOURNAL,2022,450:10.
APA	Hao, Huanhuan,Zhang, Qi-an,Feng, Ziyang,&Tang, Ao.(2022).Regulating flow field design on carbon felt electrode towards high power density operation of vanadium flow batteries.CHEMICAL ENGINEERING JOURNAL,450,10.
MLA	Hao, Huanhuan,et al."Regulating flow field design on carbon felt electrode towards high power density operation of vanadium flow batteries".CHEMICAL ENGINEERING JOURNAL 450(2022):10.