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学科主题: 物理化学
题名: A Durable Alternative for Proton-Exchange Membranes: Sulfonated Poly(Benzoxazole Thioether Sulfone)s
作者: Zhao, Dan1, 2, 3;  Li, Jinhuan1, 4;  Song, Min-Kyu1;  Yi, Baolian2;  Zhang, Huamin2;  Liu, Meilin1
通讯作者: MeilinLiu
刊名: ADVANCED ENERGY MATERIALS
发表日期: 2011-03-18
DOI: 10.1002/aenm.201000062
卷: 1, 期:2, 页:203-211
收录类别: SCI
文章类型: Article
部门归属: DNL17
项目归属: DNL17
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary ;  Physics, Applied ;  Physics, Condensed Matter
摘要: A Durable Alternative for Proton-Exchange Membranes: Sulfonated Poly(Benzoxazole Thioether Sulfone)s
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science ;  Physics
英文摘要: To develop a durable proton-exchange membrane (PEM) for fuel-cell applications, a series of sulfonated poly(benzoxazole thioether sulfone)s (SPTESBOs) are designed and synthesized, with anticipated good dimensional stability (via acid-base cross linking), improved oxidative stability against free radicals (via incorporation of thioether groups), and enhanced inherent stability (via elimination of unstable end groups) of the backbone. The structures and the degree of sulfonation of the copolymers are characterized using Fourier-transform infrared spectroscopy, and nuclear magnetic resonance spectroscopy (H-1 NMR and F-19 NMR). The electrochemical stabilities of the monomers are examined using cyclic voltammetry in a typical three-electrode cell configuration. The physicochemical properties of the membranes vital to fuel-cell performance are also carefully evaluated under conditions relevant to fuel-cell operation, including chemical and thermal stability, proton conductivity, solubility in different solvents, water uptake, and swelling ratio. The new membranes exhibit low dimensional change at 25 degrees C to 90 degrees C and excellent thermal stability up to 250 degrees C. Upon elimination of unstable end groups, the co-polymers display enhanced chemical resistance and oxidative stability in Fenton's test. Further, the SPTESBO-HFB-60 (HFB-60=hexafluorobenzene, 60 mol% sulfone) membrane displays comparable fuel-cell performance to that of an NRE 212 membrane at 80 degrees C under fully humidified condition, suggesting that the new membranes have the potential to be more durable but less expensive for fuel-cell applications.
关键词[WOS]: POLYMER ELECTROLYTE MEMBRANES ;  POLY(ARYLENE ETHER SULFONE) ;  FUEL-CELL APPLICATIONS ;  POLYARYLENETHIOETHER SULFONES ;  DEGRADATION MITIGATION ;  POLY(SULFIDE SULFONE) ;  MULTIBLOCK COPOLYMERS ;  COMPOSITE MEMBRANES ;  DURABILITY ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000291726200009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115707
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.Georgia Inst Technol, Sch Mat Sci & Engn, Ctr Innovat Fuel Cell & Battery Technol, Atlanta, GA 30332 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab PEMFC Key Mat & Technol, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
4.Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Nanjing 210016, Peoples R China

Recommended Citation:
Zhao, Dan,Li, Jinhuan,Song, Min-Kyu,et al. A Durable Alternative for Proton-Exchange Membranes: Sulfonated Poly(Benzoxazole Thioether Sulfone)s[J]. ADVANCED ENERGY MATERIALS,2011,1(2):203-211.
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