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题名: Casting Nafion-sulfonated organosilica nano-composite membranes used in direct methanol fuel cells
作者: Li, CN;  Sun, GQ;  Ren, SZ;  Liu, J;  Wang, Q;  Wu, ZM;  Sun, H;  Jin, W
关键词: Nafion ;  nano-composite membrane ;  proton conductivity ;  methanol permeability ;  direct methanol fuel cells (DMFCs)
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2006-03-15
DOI: 10.1016/j.memsci.2005.07.032
卷: 272, 期:1-2, 页:50-57
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: Sol-gel derived sulfonated diphenylclimethoxysilane (sDDS) with hydrophilic -SO3H functional groups were used as the additive to reduce the methanol permeability of Nation. The Nafion-sDDS (N-sDDS) nano-composite membranes were prepared by mixing Nafion-dimethyl formamide (DMF) solutions with sDDS sol and casting to membranes. Swelling weight (SW) test and SEM characterization show the physical properties of the composite membranes and FT-IR analysis reveals the incorporation of the sDDS monomer within the composite membranes. The composite membranes' methanol permeabilities are tested by gas chromatography according to the amount of the sulfonated silane. The cell performances of the N-sDDS membrane are evaluated and compared with the unsulfonated DDS composite membrane and Nafion (R) 117. It was found that, compared with the Nation (R) 117 membrane, the nano-composite membrane with the thickness of 125 mu m has a lower methanol permeability and better single cell performance than the unsulfonated DDS composite membrane. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANES ;  PERFORMANCE ;  PERMEATION ;  PARAMETERS ;  TRANSPORT ;  CROSSOVER
语种: 英语
WOS记录号: WOS:000235413000007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140047
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, Direct Alchol Fuel Cells Lab, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Anhui Inst Architectural & Ind, Dept Mat Sci & Engn, Hefei 230022, Peoples R China

Recommended Citation:
Li, CN,Sun, GQ,Ren, SZ,et al. Casting Nafion-sulfonated organosilica nano-composite membranes used in direct methanol fuel cells[J]. JOURNAL OF MEMBRANE SCIENCE,2006,272(1-2):50-57.
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