IMR OpenIR
Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery
Zhao, Yingying1,2; Zhang, Denghua1,2; Zhao, Lina1; Wang, Shaoliang1; Liu, Jianguo1; Yan, Chuanwei1
Corresponding AuthorWang, Shaoliang(wangshaoliang1221@163.com)
2021-10-20
Source PublicationELECTROCHIMICA ACTA
ISSN0013-4686
Volume394Pages:8
AbstractAs the key material of Vanadium flow battery (VFB), the properties of ion exchange membrane limit the battery performance and cost of VFB to some extent. Nafion membrane of Dupont, one of the most employed membranes in VFB, is also exposed to some issues such as high cost and low ion selectivity. To improve ion selectivity of Nafion membrane, polybenzimidazole (PBI), functional groups of which can be ionized to a positive charge and prevent vanadium ions from crossing the membrane, is introduced to prepare reinforced Nafion membrane (Nafion/PBI membrane). By this way, excellent conductivity and vanadium ion selectivity of Nafion membrane are optimized via the "acid-base pair" effect. Furthermore, a series of PBI contents have been optimized and the battery with Nafion/PBI membrane of 1 wt% PBI exhibits excellent performance (coulombic efficiency: 97.72%, energy efficiency: 81.31% at 200 mA cm(-2)). In the long-term cycles, higher capacity retention and superior stability of the battery with Nafion/PBI membrane (1 wt% PBI) are delivered than Nafion 212 membrane. Thus, Nafion/PBI membrane is indeed a promising candidate to promote the whole properties of VFB by surmounting the trade-off between proton conductivity and vanadium ion permeability. (C) 2021 Elsevier Ltd. All rights reserved.
KeywordAcid-base pair effect Membrane Nafion Polybenzimidazole Vanadium flow battery
Funding OrganizationNational Natural Science Foundation of China
DOI10.1016/j.electacta.2021.139144
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21975267]
WOS Research AreaElectrochemistry
WOS SubjectElectrochemistry
WOS IDWOS:000702881200005
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/166742
Collection中国科学院金属研究所
Corresponding AuthorWang, Shaoliang
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yingying,Zhang, Denghua,Zhao, Lina,et al. Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery[J]. ELECTROCHIMICA ACTA,2021,394:8.
APA Zhao, Yingying,Zhang, Denghua,Zhao, Lina,Wang, Shaoliang,Liu, Jianguo,&Yan, Chuanwei.(2021).Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery.ELECTROCHIMICA ACTA,394,8.
MLA Zhao, Yingying,et al."Excellent ion selectivity of Nafion membrane modified by PBI via acid-base pair effect for vanadium flow battery".ELECTROCHIMICA ACTA 394(2021):8.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhao, Yingying]'s Articles
[Zhang, Denghua]'s Articles
[Zhao, Lina]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhao, Yingying]'s Articles
[Zhang, Denghua]'s Articles
[Zhao, Lina]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhao, Yingying]'s Articles
[Zhang, Denghua]'s Articles
[Zhao, Lina]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.