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题名: Investigation on sulfuric acid sulfonation of in-situ sol-gel derived Nafion/SiO2 composite membrane
作者: Ke, Chang-Chun1, 2;  Li, Xiao-Jin1;  Shen, Qiang1, 2;  Qu, Shu-Guo1, 2;  Shao, Zhi-Gang1;  Yi, Bao-Lian1
关键词: High Temperature ;  Proton exchange membrane fuel cell ;  Silica ;  Sulfonation ;  Composite membrane ;  Nafion
刊名: INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
发表日期: 2011-03-01
DOI: 10.1016/j.ijhydene.2010.12.030
卷: 36, 期:5, 页:3606-3613
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Energy & Fuels
英文摘要: In this paper, an effective method to cover the conductivity loss of Nafion/SiO2 through sulfonation and its mechanism are studied. Nafion/SiO2 composite membranes are prepared via an in-situ sol gel route, and then sulfonated with concentrated sulfuric acid (marked as Nafion/S-SiO2). The effects of the sulfonation on properties of the Nafion/SiO2 composite membrane are investigated. The results show that sulfonation can improve the proton conductivity of the Nafion/SiO2 effectively, though it brings water-uptake loss to the composite membrane to some extent simultaneously. According to the results of FT-IR, UV resonance Raman spectroscopy, Si-29 solid-state MAS NMR and XRD, it's proved that higher conductivity of Nafion/S-SiO2 should be relevant to hydrogen bonds & chemical bonds between SiO2 nano particles and sulfuric acid molecules. While, lower water uptake & swelling ratio should be caused by hydroxyl-elimination on the surface of SiO2 nanoparticles during sulfonation. Single cell tests show that the performance of Nafion/S-SiO2 composite membranes substantially exceeds Nafion/SiO2 at 110 degrees C and 59%RH, and in the initial testing stage no performance reduction is observed. Copyright (C) 2010, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
关键词[WOS]: PROTON-EXCHANGE MEMBRANE ;  PEM FUEL-CELLS ;  PHOSPHATE NANOCOMPOSITE MEMBRANES ;  HIGH-TEMPERATURE OPERATION ;  ELEVATED-TEMPERATURE ;  MESOPOROUS SILICA ;  100-DEGREES-C ;  PERFORMANCE ;  NAFION(R) ;  HYBRID
语种: 英语
WOS记录号: WOS:000288833600040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142487
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, Lab Fuel Cell Syst & Engn, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Ke, Chang-Chun,Li, Xiao-Jin,Shen, Qiang,et al. Investigation on sulfuric acid sulfonation of in-situ sol-gel derived Nafion/SiO2 composite membrane[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2011,36(5):3606-3613.
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