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Mechanism of Polysulfone-Based Anion Exchange Membranes Degradation in Vanadium Flow Battery
Yuan, Zhizhang1,3; Li, Xianfeng1,2; Zhao, Yuyue1,3; Zhang, Huamin1,2
关键词Degradation Mechanism Polysulfone Hybrid Orbital 4 Anion Exchange Membranes 4 '-bipyridine Vanadium Flow Battery
刊名ACS APPLIED MATERIALS & INTERFACES
2015-09-02
DOI10.1021/acsami.5b05840
7期:34页:19446-19454
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
研究领域[WOS]Science & Technology - Other Topics ; Materials Science
关键词[WOS]ALKALINE FUEL-CELLS ; RAMAN-SPECTROSCOPY ; INFRARED-SPECTRA ; AQUEOUS-SOLUTION ; ENERGY-STORAGE ; FT-RAMAN ; COMPLEXES ; ELECTROLYTES ; PERFORMANCE ; COPOLYMERS
英文摘要The stability of hydrocarbon ion exchange membranes is one of the critical issues for a flow battery. However, the degradation mechanism of ion exchange membranes has been rarely investigated especially for anion exchange membranes. Here, the degradation mechanism of polysulfone based anion exchange membranes, carrying pyridine ion exchange groups, under vanadium flow battery (VFB) medium was investigated in detail. We find that sp(2) hybrid orbital interactions between pyridinic-nitrogen in 4,4'-bipyridine and benzylic carbon disrupt the charge state balance of pristine chloromethylated polysulfone. This difference in electronegativity inversely induces an electrophilic carbon center in the benzene ring, which can be attacked by the lone pair electron on the vanadium(V) oxygen species, further leading to the degradation of polymer backbone, while leaving the 4,4'-bipyridine ion exchange groups stable. This work represents a step toward design and construction of alternative type of chemically stable hydrocarbon ion exchange membranes for VFB.
语种英语
WOS记录号WOS:000360868700067
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文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146530
专题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.Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
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Yuan, Zhizhang,Li, Xianfeng,Zhao, Yuyue,et al. Mechanism of Polysulfone-Based Anion Exchange Membranes Degradation in Vanadium Flow Battery[J]. ACS APPLIED MATERIALS & INTERFACES,2015,7(34):19446-19454.
APA Yuan, Zhizhang,Li, Xianfeng,Zhao, Yuyue,&Zhang, Huamin.(2015).Mechanism of Polysulfone-Based Anion Exchange Membranes Degradation in Vanadium Flow Battery.ACS APPLIED MATERIALS & INTERFACES,7(34),19446-19454.
MLA Yuan, Zhizhang,et al."Mechanism of Polysulfone-Based Anion Exchange Membranes Degradation in Vanadium Flow Battery".ACS APPLIED MATERIALS & INTERFACES 7.34(2015):19446-19454.
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