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Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery
Che, Xuefu1; Zhao, Huan2; Ren, Xiaorui1; Zhang, Denghua2; Wei, Hao2; Liu, Jianguo2; Zhang, Xia1; Yang, Jingshuai1
Corresponding AuthorLiu, Jianguo(jgliu@imr.ac.cn) ; Zhang, Xia(xzhang@mail.neu.edu.cn) ; Yang, Jingshuai(yjs@mail.neu.edu.cn)
2020-10-01
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume611Pages:10
AbstractDevelopment of high ion-selective polymer membranes is of great importance for vanadium redox flow batteries (VRFBs). In this work, porous polybenzimidazole (PBI) membranes are successfully prepared for improved efficiencies and stability in VRFB applications. The porous structure is constructed via a hard templating method using monodispersed SiO2 solid spheres and 3 M NaOH as template and etching solution, respectively. The influence of the adding content of SiO2 on the microstructure of the membrane is illustrated. The properties of porous membranes, including acid doping, swellings, area resistance, mechanical properties, vanadium ion permeation, and single cell and cycling performance, are investigated systematically. Results show that asymmetric porous PBI membranes exhibit increased sulfuric acid (SA) uptake (>35 wt%), remarkably low area resistance (<0.58 Omega cm(2)), ultralow vanadium ion permeability (<10(-9) cm(2) min(-1)) and superior mechanical strength (>20 MPa) simultaneously. At high current densities (80-200 mA cm(-2)), the cell with the porous PBI-40%SiO2 membrane possesses superior coulombic efficiencies (CE: 99.5-100%) and energy efficiencies (EE: 87.9-71.5%), together with excellent cycling stability at 120 mA cm(-2) in the vanadium flow battery. Accordingly, this work not only provides a kind of advanced membranes for the VRFB, but also offers a facile and effective method to design, optimize and fabricate membranes incorporating the features according to needs.
KeywordVanadium redox flow battery Polybenzimidazole Porous Ultralow vanadium ions permeability
Funding OrganizationNational Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of China ; Liaoning Provincial Natural Science Foundation of China ; Shenyang key R&D and technology transfer program
DOI10.1016/j.memsci.2020.118359
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51603031] ; Fundamental Research Funds for the Central Universities of China[N2005026] ; Liaoning Provincial Natural Science Foundation of China[20180550871] ; Shenyang key R&D and technology transfer program[Z17-7-026]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
WOS IDWOS:000560704100015
PublisherELSEVIER
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/140338
Collection中国科学院金属研究所
Corresponding AuthorLiu, Jianguo; Zhang, Xia; 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
Recommended Citation
GB/T 7714
Che, Xuefu,Zhao, Huan,Ren, Xiaorui,et al. Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery[J]. JOURNAL OF MEMBRANE SCIENCE,2020,611:10.
APA Che, Xuefu.,Zhao, Huan.,Ren, Xiaorui.,Zhang, Denghua.,Wei, Hao.,...&Yang, Jingshuai.(2020).Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery.JOURNAL OF MEMBRANE SCIENCE,611,10.
MLA Che, Xuefu,et al."Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery".JOURNAL OF MEMBRANE SCIENCE 611(2020):10.
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