DICP OpenIR
Mechanism of Polysulfone-Based Anion Exchange Membranes Degradation in Vanadium Flow Battery
Yuan, Zhizhang1,3; Li, Xianfeng1,2; Zhao, Yuyue1,3; Zhang, Huamin1,2
KeywordDegradation Mechanism Polysulfone Hybrid Orbital 4 Anion Exchange Membranes 4 '-bipyridine Vanadium Flow Battery
Source PublicationACS APPLIED MATERIALS & INTERFACES
2015-09-02
DOI10.1021/acsami.5b05840
Volume7Issue:34Pages:19446-19454
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS KeywordALKALINE FUEL-CELLS ; RAMAN-SPECTROSCOPY ; INFRARED-SPECTRA ; AQUEOUS-SOLUTION ; ENERGY-STORAGE ; FT-RAMAN ; COMPLEXES ; ELECTROLYTES ; PERFORMANCE ; COPOLYMERS
AbstractThe 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.
Language英语
WOS IDWOS:000360868700067
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146530
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
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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