DICP OpenIR
Subject Area物理化学
Influence of Solvent on Polymer Prequaternization toward Anion-Conductive Membrane Fabrication for All-Vanadium Flow Battery
Zhang, Fengxiang; Zhang, Huamin; Qu, Chao; Zhang FX(张凤祥); Zhang HM(张华民)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY B
2012-08-02
DOI10.1021/jp304880r
Volume116Issue:30Pages:9016-9022
Indexed BySCI
SubtypeArticle
DepartmentDNL17
Funding ProjectDNL17
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordEXCHANGE MEMBRANE ; FUEL-CELLS ; CASTING SOLVENT ; ETHER KETONE) ; AMINATION ; DYNAMICS ; PTFE
AbstractTriethylamine- (TEA-) enabled prequaternization of a polymer for nonalkaline anion-exchange membrane (AEM) fabrication is more facile and environmentally benign than the conventional trimethylamine-based postquaternization route. It is also more compatible with forming a microphase-separated membrane morphology that can facilitate ion transport. However, most studies of TEA-quaternized AEMs have reported unsatisfactory conductivities, and no examples of their application in all-vanadium flow batteries (VFBs) have been reported. In this work, we aim to address this issue and demonstrate that, by employing a favorable solvent, polysulfone can be prequaternized to a high level with TEA and further fabricated into an AEM showing good conductivity (18.2 mS cm(-1) at room temperature) and impressive VFB performance (Coulombic efficiency above 98% and energy efficiency above 80% at 80 mA cm(-2)). In contrast, when an unfavorable solvent is used, membrane quaternization does not occur significantly. This contrast is shown to result from the absence or presence of solvent-TEA competition during quaternization, which is related to the the electron-donating or -withdrawing properties of the solvents used. Our study adds new understanding to the quaternization chemistry of AEMs and also represents the first example, to our knowledge, of a TEA-quaternized AEM yielding high VFB efficiencies.
Language英语
WOS IDWOS:000306989800031
Citation statistics
Cited Times:28[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/117960
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhang FX(张凤祥); Zhang HM(张华民)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Ctr Energy Storage Batteries & Technol, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Fengxiang,Zhang, Huamin,Qu, Chao,et al. Influence of Solvent on Polymer Prequaternization toward Anion-Conductive Membrane Fabrication for All-Vanadium Flow Battery[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2012,116(30):9016-9022.
APA Zhang, Fengxiang,Zhang, Huamin,Qu, Chao,张凤祥,&张华民.(2012).Influence of Solvent on Polymer Prequaternization toward Anion-Conductive Membrane Fabrication for All-Vanadium Flow Battery.JOURNAL OF PHYSICAL CHEMISTRY B,116(30),9016-9022.
MLA Zhang, Fengxiang,et al."Influence of Solvent on Polymer Prequaternization toward Anion-Conductive Membrane Fabrication for All-Vanadium Flow Battery".JOURNAL OF PHYSICAL CHEMISTRY B 116.30(2012):9016-9022.
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