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Promotion of PEM self-humidifying effect by nanometer-sized sulfated zirconia-supported Pt catalyst hybrid with sulfonated poly(ether ether ketone)
Zhang, Yu; Zhang, Huamin; Zhu, Xiaobing; Bi, Cheng; Zhang HM(张华民); Zhang HM(张华民)
刊名JOURNAL OF PHYSICAL CHEMISTRY B
2007-06-14
DOI10.1021/jp071805x
111期:23页:6391-6399
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
研究领域[WOS]Chemistry
关键词[WOS]POLYMER ELECTROLYTE MEMBRANES ; FUEL-CELL MEMBRANES ; COMPOSITE MEMBRANE ; GAS-CROSSOVER ; METAL-OXIDES ; PROTON ; OPERATION ; NAFION ; HUMIDIFICATION ; PARTICLES
英文摘要A self-humidifying membrane based on low-cost sulfonated poly (ether ether ketone) (SPEEK) hybrid with sulfated zirconia (SO42-/ZrO2, SZ)-supported platinum catalyst (Pt-SZ catalyst) was investigated for fuel cell applications. The SZ particle, a solid-state superacid with hygroscopic and high proton conductivity properties, was employed as the catalyst support. The SPEEK/Pt-SZ self-humidifying membrane was characterized by TEM and SEM coupled with EDX. FT-IR was conducted to verify the effect of SPEEK/Pt-SZ membrane on catalytic combination of crossover hydrogen and oxygen. To display the advantages of Pt-SZ catalyst as the additive, the IEC, water uptake, proton conductivity, single-cell performance, and areal resistance measurements were compared between the plain SPEEK membrane, SPEEK/Pt-SiO2 membrane, and the SPEEK/Pt-SZ membrane. The SPEEK/Pt-SZ membrane exhibited the highest IEC value, proton conductivity, single-cell performance, and the lowest areal resistance relative to the plain SPEEK and SPEEK/Pt-SiO2 membranes. The SPEEK/Pt-SZ self-humidifying membrane exhibited peak power density of 1.0 W/cm(2) under dry operation condition compared with 0.89 W/cm(2) and 0.58 W/cm(2) of SPEEK/Pt-SiO2 and plain SPEEK membranes, respectively. The incorporation of the catalytic, hygroscopic and proton conductive Pt-SZ catalyst in the SPEEK/Pt-SZ self-humidifying membrane facilitated water balance and proton conduction, and accordingly improved its single cell performance under dry operation. In addition, the enhanced OCV and the decreased areal ohmic resistance confirmed the promotion effect of Pt-SZ catalyst in the self-humidifying membrane on suppressing reactant crossover and the membrane self-humidification.
语种英语
原文出处查看原文
WOS记录号WOS:000247034100014
引用统计
被引频次:37[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/99005
专题中国科学院大连化学物理研究所
通讯作者Zhang HM(张华民); Zhang HM(张华民)
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
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GB/T 7714
Zhang, Yu,Zhang, Huamin,Zhu, Xiaobing,et al. Promotion of PEM self-humidifying effect by nanometer-sized sulfated zirconia-supported Pt catalyst hybrid with sulfonated poly(ether ether ketone)[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(23):6391-6399.
APA Zhang, Yu,Zhang, Huamin,Zhu, Xiaobing,Bi, Cheng,张华民,&张华民.(2007).Promotion of PEM self-humidifying effect by nanometer-sized sulfated zirconia-supported Pt catalyst hybrid with sulfonated poly(ether ether ketone).JOURNAL OF PHYSICAL CHEMISTRY B,111(23),6391-6399.
MLA Zhang, Yu,et al."Promotion of PEM self-humidifying effect by nanometer-sized sulfated zirconia-supported Pt catalyst hybrid with sulfonated poly(ether ether ketone)".JOURNAL OF PHYSICAL CHEMISTRY B 111.23(2007):6391-6399.
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