Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery

doi:10.1016/j.memsci.2020.118359

CORC > 金属研究所 > 中国科学院金属研究所

	Porous polybenzimidazole membranes with high ion selectivity for the vanadium redox flow battery
	Che, Xuefu 1; Zhao, Huan 2; Ren, Xiaorui 1; Zhang, Denghua 2; Wei, Hao 2; Liu, Jianguo 2; Zhang, Xia 1; Yang, Jingshuai 1
刊名	JOURNAL OF MEMBRANE SCIENCE
	2020-10-01
卷号	611 页码:10
关键词	Vanadium redox flow battery Polybenzimidazole Porous Ultralow vanadium ions permeability
ISSN号	0376-7388
DOI	10.1016/j.memsci.2020.118359
通讯作者	Liu, Jianguo(jgliu@imr.ac.cn) ; Zhang, Xia(xzhang@mail.neu.edu.cn) ; Yang, Jingshuai(yjs@mail.neu.edu.cn)
英文摘要	Development 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.
资助项目	National 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研究方向	Engineering ; Polymer Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000560704100015
资助机构	National 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
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/140337]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Jianguo; Zhang, Xia; Yang, Jingshuai
作者单位	1.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 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.