Morphology and performance of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend porous membranes for vanadium flow battery application

	Morphology and performance of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend porous membranes for vanadium flow battery application
	Xu, Wanxing 1,2; Li, Xianfeng 1; Cao, Jingyu 1,2; Yuan, Zhizhang 1,2; Zhang, Huamin 1
刊名	rsc advances
	2014
卷号	4 期号:76 页码:40400-40406
通讯作者	李先锋 ; 张华民
英文摘要	poly(ether sulfone) (pes) porous membranes with tunable morphology were fabricated via a phase inversion method and applied in vanadium flow batteries (vfbs). the morphology of the pes membrane was adjusted by changing the polymer concentration and blending with hydrophilic sulfonated poly(ether ether ketone) (speek) in the cast solution. the relationship between the membrane morphology and the performance in vfbs was investigated in detail. the results indicated that with increasing polymer concentration of the cast solution, the number of macrovoids gradually decreased and the finger-like pores became larger. a higher coulombic efficiency (ce) can be obtained due to the lower vanadium permeability, while the voltage efficiency (ve) decreased. in addition, the introduction of speek in cast solution will induce the transformation of membrane structures from finger-like to spongy-like pores. the ce decreased with the higher vanadium permeability, while the ve increased due to the increased proton conductivity. as a result, optimized vfb performance of the pes membranes was obtained, showing a ce of 92.8% and an energy efficiency (ee) of 78.4%. the battery assembled with the prepared membranes showed a stable battery performance after running for more than 200 cycles, showing good oxidation stability. this work presents an effective and facile method to fabricate pes membranes with tunable battery performance.
学科主题	物理化学
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	research-and-development ; vo2+/vo2+ redox couples ; graphene oxide ; fuel-cells ; polymerization ; progress
收录类别	SCI
语种	英语
WOS记录号	WOS:000341936400039
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/143944]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Xu, Wanxing,Li, Xianfeng,Cao, Jingyu,et al. Morphology and performance of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend porous membranes for vanadium flow battery application[J]. rsc advances,2014,4(76):40400-40406.
APA	Xu, Wanxing,Li, Xianfeng,Cao, Jingyu,Yuan, Zhizhang,&Zhang, Huamin.(2014).Morphology and performance of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend porous membranes for vanadium flow battery application.rsc advances,4(76),40400-40406.
MLA	Xu, Wanxing,et al."Morphology and performance of poly(ether sulfone)/sulfonated poly(ether ether ketone) blend porous membranes for vanadium flow battery application".rsc advances 4.76(2014):40400-40406.