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题名: A Bunch-Like Tertiary Amine Grafted Polysulfone Membrane for VRFBs with Simultaneously High Proton Conductivity and Low Vanadium Ion Permeability
作者: Tan, Qinglong1;  Lu, Shanfu1;  Si, Jiangju1;  Wang, Haining1;  Wu, Chunxiao1;  Li, Xianfeng2;  Xiang, Yan1
关键词: proton conductivity ;  tertiary amine ;  vanadium ion permeability ;  vanadium redox flow batteries
刊名: MACROMOLECULAR RAPID COMMUNICATIONS
发表日期: 2017-04-01
DOI: 10.1002/marc.201600710
卷: 38, 期:8
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: Novel polysulfone membranes with bunch-like tertiary amine groups are synthesized with high ion selectivity and outstanding chemical stability for vanadium redox flow batteries (VRFBs). The bunch-like tertiary amine groups simultaneously act as an ionic conductor for proton hopping and vanadium ion transport obstacles. The performance of the membrane is tuned via controlling the grafting degree of the chloromethylated polysulfone. The results show that membranes show increasing proton over vanadium ion (sigma/p) selectivity with increasing functional tertiary groups. VRFBs assembled with the prepared membranes demonstrate an impressive Coulombic efficiency of 98.9% and energy efficiency of 90.9% at a current density of 50 mA cm(-2). Furthermore, the prepared membrane reported in this work shows excellent stability in 1 m VO2+ solution at 35 degrees C over 240 h. Overall, the synthesized polymers provide a new insight into the design of high-performance membranes toward VRFB applications.
关键词[WOS]: REDOX FLOW BATTERIES ;  ANION-EXCHANGE MEMBRANES ;  POROUS MEMBRANES ;  FUEL-CELLS ;  SELECTIVITY ;  DEGRADATION ;  ELECTROLYTE ;  STABILITY ;  MECHANISM ;  DESIGN
语种: 英语
WOS记录号: WOS:000400377600003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152005
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Beihang Univ, Sch Space & Environm, Beijing Key Lab Bioinspired Energy Mat & Devices, Beijing 100191, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Div Energy Storage, Zhongshan Rd 457, Dalian 116023, Peoples R China

Recommended Citation:
Tan, Qinglong,Lu, Shanfu,Si, Jiangju,et al. A Bunch-Like Tertiary Amine Grafted Polysulfone Membrane for VRFBs with Simultaneously High Proton Conductivity and Low Vanadium Ion Permeability[J]. MACROMOLECULAR RAPID COMMUNICATIONS,2017,38(8).
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