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Quaternary ammonium groups grafted polybenzimidazole membranes for vanadium redox flow battery applications
Ren, Xiaorui1; Zhao, Lina2; Che, Xuefu1; Cai, Yuyang3; Li, Yunqi3; Li, Huanhuan1; Chen, Hui2; He, Hongxiang2; Liu, Jianguo2; Yang, Jingshuai1
Corresponding AuthorLiu, Jianguo(jgliu@imr.ac.cn) ; Yang, Jingshuai(yjs@mail.neu.edu.cn)
2020-05-01
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume457Pages:10
AbstractThe 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.
KeywordVanadium flow battery Polybenzimidazole Grafting Quaternary ammonium groups
Funding OrganizationNational 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
DOI10.1016/j.jpowsour.2020.228037
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000523642000019
PublisherELSEVIER
Citation statistics
Cited Times:24[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137979
Collection中国科学院金属研究所
Corresponding AuthorLiu, Jianguo; Yang, Jingshuai
Affiliation1.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
3.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab High Performance Synthet Rubber & Its Com, Changchun 130022, Peoples R China
Recommended Citation
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.
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