Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications

doi:10.1016/j.jpowsour.2020.228037

CORC > 金属研究所 > 中国科学院金属研究所

	Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications
	Ren, Xiaorui 2; Zhao, Lina 1; Che, Xuefu 2; Cai, Yuyang 3; Li, Yunqi 3; Li, Huanhuan 2; Chen, Hui 1; He, Hongxiang 1; Liu, Jianguo 1; Yang, Jingshuai 2
刊名	JOURNAL OF POWER SOURCES
	2020-05-01
卷号	457 页码:10
关键词	Vanadium flow battery Polybenzimidazole Grafting Quaternary ammonium groups
ISSN号	0378-7753
DOI	10.1016/j.jpowsour.2020.228037
通讯作者	Liu, Jianguo(jgliu@imr.ac.cn) ; Yang, Jingshuai(yjs@mail.neu.edu.cn)
英文摘要	The sulfuric acid (SA) doped dense polybenzimidazole (PBI) membrane exhibits low vanadium crossover, and is of great interest as the separator in vanadium redox flow battery (VRFB) applications. However, further reducing the area resistance is needed to increase the voltage efficiency. Towards this target, a series of quaternary ammonium groups grafted PBI membranes are designed and synthesized by using 2,3-epoxypropyltrimethylammonium chloride (EPTMA-Cl) as the grafting agent. The membranes were prepared through a gentle and facile heating curing method without the usage of catalyst, and physicochemical properties and single cell performance of SA doped PBI-EPTMA membranes are systematically investigated. The results indicate that grafted EPTMA groups increase the hydmphilicity and free volume of membranes, resulting in enhanced SA doping content and decreased area resistance. Ultimately, VRFB assembled with the PBI-21%EPTMA membrane displays higher energy efficiencies (87.6%-75.3%) at current densities of 50-150 mA cm(-2), comparing with Nafion115 (81.7-61.2%). The stable performance over 450 charge-discharge cycles of VRFB demonstrates the good stability of the PBI-EPTMA membrane.
资助项目	National Natural Science Foundation of China[51603031] ; Fundamental Research Funds for the Central Universities[N2005026] ; Liaoning Provincial Natural Science Foundation of China[20180550871] ; Shenyang key R&D and technology transfer program[Z17-7-026]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000523642000019
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Liaoning Provincial Natural Science Foundation of China ; Shenyang key R&D and technology transfer program
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137978]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Jianguo; Yang, Jingshuai
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab High Performance Synthet Rubber & Its Com, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Ren, Xiaorui,Zhao, Lina,Che, Xuefu,et al. Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications[J]. JOURNAL OF POWER SOURCES,2020,457:10.
APA	Ren, Xiaorui.,Zhao, Lina.,Che, Xuefu.,Cai, Yuyang.,Li, Yunqi.,...&Yang, Jingshuai.(2020).Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications.JOURNAL OF POWER SOURCES,457,10.
MLA	Ren, Xiaorui,et al."Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications".JOURNAL OF POWER SOURCES 457(2020):10.