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题名: Preparation and characterization of sulfated zirconia(SO42-/ZrO2)/Nafion composite membranes for PEMFC operation at high temperature/low humidity
作者: Zhai, Yunfeng;  Zhang, Huamin;  Hu, Jingwei;  Yi, Baolian
关键词: sulfated zirconia ;  composite membrane ;  S-ZrO2/Nafion ;  high temperature PEMFC ;  ion exchange capacity
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2006-09-01
DOI: 10.1016/j.memsci.2006.01.028
卷: 280, 期:1-2, 页:148-155
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: Fine particle superacidic sulfated zirconia (SO42-/ZrO2, S-ZrO2) was synthesized by ameliorated method, and composite membranes with different S-ZrO2 contents were prepared by a recasting procedure from a suspension of S-ZrO2 powder and Nation solution. The physico-chemical properties of the membranes were studied by ion exchange capacity (IEC) and liquid water uptake measurements, scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis, thermogravimetry-mass spectrometry (TG-MS) and Fourier transform infrared (Fr-IR) spectroscopy. The results showed that the IEC of composite membrane increased with the content of S-ZrO2, S-ZrO2 was compatible with the Nafion matrix, the incorporation of the S-ZrO2 could increase the crystallinity and also improve the initial degradation temperature of the composite membrane. The performance of single cell was the best when the S-ZrO2 content was 15 wt.%, and achieved 1.35 W/cm(2) at 80 degrees C and 0.99 W/cm(2) at 120 degrees C based on H-2/O-2 and at a pressure of 2 atm, the performance of the single cell with optimized S-ZrO2 was far more than that of the Nation at the same condition (e.g. 1.28W/cm(2) at 80 degrees C, 0.75 W/cm(2) at 120 degrees C). The 15 wt.% S-ZrO2/Nafion composite membrane showed lower fuel cell internal resistance than Nation membranes at high temperature and low relative humidity (RH). (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: FUEL-CELLS ;  PROTON CONDUCTIVITY ;  ZIRCONIA ;  ACID ;  CATALYSTS ;  NAFION ;  100-DEGREES-C
语种: 英语
WOS记录号: WOS:000239472900019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139957
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, Proton Exchange Membrane Fuel Cell Key Mat & Tech, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhai, Yunfeng,Zhang, Huamin,Hu, Jingwei,et al. Preparation and characterization of sulfated zirconia(SO42-/ZrO2)/Nafion composite membranes for PEMFC operation at high temperature/low humidity[J]. JOURNAL OF MEMBRANE SCIENCE,2006,280(1-2):148-155.
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