中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: An ultrathin self-humidifying membrane for PEM fuel cell application: Fabrication, characterization, and experimental analysis
作者: Zhu, Xiaobing;  Zhang, Huamin;  Zhang, Yu;  Liang, Yongmin;  Wang, Xiaoli;  Yi, Baolian
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2006-07-27
DOI: 10.1021/jp061955s
卷: 110, 期:29, 页:14240-14248
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: An ultrathin poly( tetrafluoroethylene) ( PTFE)-reinforced multilayer self- humidifying composite membrane ( 20 mu m, thick) is developed. The membrane is composed of Nafion-impregnated porous PTFE composite as the central layer, and SiO2 supported nanosized Pt particles (Pt-SiO2) imbedded into the Nafion as the two side layers. The proton exchange membrane (PEM) fuel cell employing the self- humidifying membrane (Pt-SiO2/ NP) turns out a peak power density of 1.40 W cm(-2) and an open circuit voltage (OCV) of 1.032 V under dry H-2/O-2 condition. The excellent performance is attributed to the combined result of both the accelerated water back-diffusion in the thin membrane and the adsorbing/releasing water properties of the Pt-SiO2 catalyst in the side layers. Moreover, the inclusion of the hygroscopic Pt-SiO2 catalyst inside the membrane results in an enhanced anode self- humidification capability and also the decreased cathode polarization ( accordingly an improved cell OCV). Several techniques, such as transmission electronic microscopy, scanning electronic microscopy, energy dispersive spectroscopy, thermal analysis and electrochemical impedance spectroscopy etc., are employed to characterize the Pt-SiO2/ NP membrane. The results are discussed in comparison with the plain Nafion/PTFE membrane (NP). It is established that the reverse net water drag ( from the cathode to the anode) across the Pt-SiO2/NP membrane reaches 0.16 H2O/H+. This implies a good hydration of the Pt-SiO2/NP membrane and thus ensures an excellent PEM fuel cell performance under self- humidification operation.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANES ;  ION-EXCHANGE MEMBRANES ;  COMPOSITE MEMBRANES ;  MATHEMATICAL-MODEL ;  PROTON TRANSPORT ;  WATER TRANSPORT ;  GAS-CROSSOVER ;  NAFION ;  HUMIDIFICATION ;  TEMPERATURE
语种: 英语
WOS记录号: WOS:000239141800039
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139985
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


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:
Zhu, Xiaobing,Zhang, Huamin,Zhang, Yu,et al. An ultrathin self-humidifying membrane for PEM fuel cell application: Fabrication, characterization, and experimental analysis[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2006,110(29):14240-14248.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Zhu, Xiaobing]'s Articles
 [Zhang, Huamin]'s Articles
 [Zhang, Yu]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Zhu, Xiaobing]‘s Articles
 [Zhang, Huamin]‘s Articles
 [Zhang, Yu]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace