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题名: Hybrid Nafion-inorganic oxides membrane doped with heteropolyacids for high temperature operation of proton exchange membrane fuel cell
作者: Shao, ZG;  Xu, HF;  Li, MQ;  Hsing, IM
通讯作者: 邵志刚
关键词: composite membranes ;  inorganic oxides ;  Nafion membrane ;  heteropolyacids ;  PEM fuel cell
刊名: SOLID STATE IONICS
发表日期: 2006-03-15
DOI: 10.1016/j.ssi.2005.12.035
卷: 177, 期:7-8, 页:779-785
收录类别: SCI
文章类型: Article
部门归属: 3
项目归属: 303
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Performance of the proton exchange membrane fuel cell (PEMFC) with composite Nafion-inorganic additives such as silicon oxide (SiO2), titanium dioxide (TiO2), tungsten oxide (WO3), and SiO2/phosphotungstic acid (PWA) has been studied for the operation of temperature of above 100 degrees C. These composite membranes are prepared by the way of blending of the inorganic oxides with Nafion solution by the recasting procedure. The physico-chemical properties studied by means of scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques have proved the uniform and homogeneous distribution of these oxides and the consequent enhancement of crystalline character of these membranes. The thermogravimetry analysis (TGA) results have indicated that the additives TiO2 and WO3 have accelerated decomposition of the membrane at an earlier temperature than that of the Nafion membrane. The modified membranes have shown higher uptake of water relative to that of the unmodified membranes. The proton conductivity of the modified membranes, except that of the Nafion/TiO2, is found to be close to that of the native Nafion membrane at high temperature and at 100% relative humidity (RH), however, it was much higher at low RH. The performance of these modified membranes in the PEMFC operated at 110 degrees C and 70% RH is better than that of Nafion membrane and is found in the order of Nafion/SiO2/PkVA > Nafion/SiO2 > Nafion/WO3 > Nafion/TiO2. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANE ;  COMPOSITE MEMBRANES ;  PEMFCS ;  NANOCOMPOSITES ;  ACID
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000236892400022
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/97385
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, Fuel Cell R&D Ctr, Beijing, Peoples R China
2.Hong Kong Univ Sci & Technol, Dept Chem Engn, Kowloon, Hong Kong, Peoples R China

Recommended Citation:
Shao, ZG,Xu, HF,Li, MQ,et al. Hybrid Nafion-inorganic oxides membrane doped with heteropolyacids for high temperature operation of proton exchange membrane fuel cell[J]. SOLID STATE IONICS,2006,177(7-8):779-785.
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