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题名: Comparison of alkaline stability of quaternary ammonium- and 1,2-methylimidazolium-based alkaline anion exchange membranes
作者: Yang, Congrong1, 2;  Wang, Suli1;  Ma, Wenjia1;  Jiang, Luhua1;  Sun, Gongquan1
关键词: Alkaline anion exchange membrane ;  Quaternary ammonium ;  1,2-methlimidazolium ;  Alkaline stability ;  Fuel cell performance
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2015-08-01
DOI: 10.1016/j.memsci.2015.03.067
卷: 487, 页:12-18
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: The alkaline stability of 1,2-dimethylimidazolium with various N3-substituents (including butyl, benzyl and vinylbenzyl) and corresponding quaternary ammonium small molecular compounds, and the 1,2-dimethylimidazolium- and quaternary ammonium-based membranes are systemically studied in the same condition. The spectroscopy (such as NMR, FT-IR, XPS and mass spectrum) results of the two kinds of small molecular compounds indicate that the quaternary ammonium cations are more stable than 1,2-dimethylimidazolium cations in 3 M KOH at elevated temperature, especially at 80 degrees C. Moreover, the alkaline stability of the 1,2-dimethylimidazolium cations would be influenced by the N3-substitutions of the imidazolium, and N3-butyl substituted cation shows a better alkaline stability. The quaternary ammonium-based membrane are also more stable than the 1,2-dimethylimidazolium-based membrane in 1 M KOH at 60 degrees C. In addition, the performance of the alkaline direct methanol fuel cell using quaternary ammonium-based membrane (22 mW cm(-2)) is much better than that of the fuel cell using 1,2-dimethylimidazolium-based membrane (0.04 mW cm(-2)). (C)2015 Elsevier B.V. All rights reserved.
关键词[WOS]: FUEL-CELL APPLICATIONS ;  NMR-SPECTROSCOPY ;  IMIDAZOLIUM ;  DEGRADATION ;  POLYMER
语种: 英语
WOS记录号: WOS:000354490700002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146254
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.Chinese Acad Sci, Dalian Inst Chem Phys, Div Fuel Cell & Battery, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Yang, Congrong,Wang, Suli,Ma, Wenjia,et al. Comparison of alkaline stability of quaternary ammonium- and 1,2-methylimidazolium-based alkaline anion exchange membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2015,487:12-18.
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