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题名: Investigation of self-humidifying membranes based on sulfonated poly(ether ether ketone) hybrid with sulfated zirconia supported Pt catalyst for fuel cell applications
作者: Zhang, Yu;  Zhang, Huamin;  Zhai, Yunfeng;  Zhu, Xiaobing;  Bi, Cheng
关键词: PEMFC ;  self-humidifying membrane ;  sulfated zirconia supported platinum catalyst ;  SPEEK ;  proton conductivity
刊名: JOURNAL OF POWER SOURCES
发表日期: 2007-06-01
DOI: 10.1016/j.jpowsour.2007.03.007
卷: 168, 期:2, 页:323-329
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Electrochemistry ;  Energy & Fuels
研究领域[WOS]: Electrochemistry ;  Energy & Fuels
英文摘要: A self-humidifying membrane based on sulfonated poly(ether ether ketone) (SPEEK) hybrid with sulfated zirconia (SO42-/ZrO2, SZ) supported platinum catalyst (Pt-SZ catalyst) was synthesized for fuel cell applications. The SZ, a solid state superacid with hygroscopic properties and proton-conductive properties, was employed to synthesize the Pt-SZ catalyst. The self-humidifying membrane (SPEEK/Pt-SZ) was characterized by TEM, FT-IR. TGA and SEM coupled with EDX. The SPEEK/Pt-SZ membrane exhibited higher water uptake and proton conductivity than the plain SPEEK membrane. Consequently, the SPEEK/Pt-SZ self-humidifying membrane under dry operation showed a higher open circuit voltage (OCV) of 1.015 V and a maximum power density of 0.95 W cm(-2), relative to 0.96 V and 0.54 W cm(-2) for the plain SPEEK membrane. The incorporation of the catalytic. hygroscopic and proton-conductive Pt-SZ catalyst in the SPEEK matrix facilitated water balance and proton conduction, accordingly improved the single cell performance under dry operation. In addition, the enhanced OCV and the decreased area ohmic resistance confirmed the effect of Pt-SZ catalyst in the self-humidifying membrane on suppressing reactant crossover and the membrane self-humidification. (C) 2007 Elsevier B.V All rights reserved.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANES ;  COMPOSITE MEMBRANES ;  PEMFC OPERATION ;  GAS-CROSSOVER ;  METAL-OXIDES ;  PROTON ;  HUMIDIFICATION ;  TRANSPORT ;  NAFION ;  SUPPRESSION
语种: 英语
WOS记录号: WOS:000247055200004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140578
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 PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Zhang, Yu,Zhang, Huamin,Zhai, Yunfeng,et al. Investigation of self-humidifying membranes based on sulfonated poly(ether ether ketone) hybrid with sulfated zirconia supported Pt catalyst for fuel cell applications[J]. JOURNAL OF POWER SOURCES,2007,168(2):323-329.
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