新型直接交联磺化聚芳醚砜燃料电池用质子交换膜的合成及性能

高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (11): 2306.

新型直接交联磺化聚芳醚砜燃料电池用质子交换膜的合成及性能

毕慧平, 陈守文, 王佳力, 张轩, 高智琳, 张莎, 陶应勇, 王连军

南京理工大学化工学院, 南京 210094

收稿日期:2009-03-06 出版日期:2009-11-10 发布日期:2009-11-10
通讯作者: 陈守文, 男, 博士, 副研究员, 主要从事燃料电池用质子交换膜研究. E-mail: shouwenchen@yahoo.com.cn; 王连军, 男, 博士, 教授, 主要从事环境工程和应用化学研究. E-mail: wanglj@mail.njust.edu.cn
基金资助:
江苏省自然科学基金(批准号: BK2007211)、教育部留学回国人员和南京理工大学留学回国人员科研启动基金资助.

Syntheses and Properties of Directly Crosslinked Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membrane Fuel Cells

BI Hui-Ping, CHEN Shou-Wen^*, WANG Jia-Li, ZHANG Xuan, GAO Zhi-Lin, ZHANG Sha, TAO Ying-Yong, WANG Lian-Jun^*

School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Received:2009-03-06 Online:2009-11-10 Published:2009-11-10
Contact: CHEN Shou-Wen, E-mail: shouwenchen@yahoo.com.cn; WANG Lian-Jun, E-mail: wanglj@mail.njust.edu.cn
Supported by:
江苏省自然科学基金(批准号: BK2007211)、教育部留学回国人员和南京理工大学留学回国人员科研启动基金资助.

摘要/Abstract

摘要：

以4,4′-二氟二苯砜、4,4′-联苯二酚、3,3′-二磺化-4,4′-二氟二苯砜二钠盐和三羟基苯为原料, 经高温溶液缩聚反应, 制备了一系列不同磺化度的新型交联磺化聚芳醚砜(CSPAES). 利用¹H NMR和FTIR对聚合物结构进行表征. 采用溶液浇铸法制备了聚合物膜. 对膜的离子交换容量、吸水率、尺寸变化、机械性能和质子导电率进行了分析. 结果表明, 通过交联处理的磺化聚芳醚砜的水溶胀性明显降低, 当IEC为2.43时, CSPAES膜M(6/4-5)在水中的质子导电率达到260.5 mS/cm, 约为相同条件下Nafion112的2倍.

关键词: 交联; 磺化聚芳醚砜; 质子交换膜; 水溶涨性; 燃料电池

Abstract:

A series of crosslinked sulfonated poly(arylene ether sulfone)s were synthesized from 4,4′-difluorodiphenyl sulfone(DFDPS), 4,4′-biphenol(BP), 3,3′-disulfonate-4,4′-difluorodiphenyl sulfone(SDFDPS) and 1,3,5-trihydroxy benzene(THB) by nucleophilic substitution polycondensation reactions. The trifunctional crosslinker of THB was in the mass fraction range of 3%—7%. The structures of the polymers were confirmed by ¹H NMR and FTIR. The membranes were obtained by solution casting. The properties of the membranes including the ion exchange capacity(IEC), water uptake, diamensional change, mechanic property and proton conductivity were investigated. The results show that the water swelling is decreased after the cross-linking treatment. For the CSPAES membrane of M(6/4-6), with IEC of 2.43 meq/q, it show proton conductivity of 260.5 mS/cm in water at 60 ℃, which is almost twice to that of Nafion 112.

Key words: Crosslink; Sulfonated poly(arylene ether sulfone); Proton exchange membrane; Water stability; Fuel cell

TrendMD:

毕慧平, 陈守文, 王佳力, 张轩, 高智琳, 张莎, 陶应勇, 王连军. 新型直接交联磺化聚芳醚砜燃料电池用质子交换膜的合成及性能. 高等学校化学学报, 2009, 30(11): 2306.

BI Hui-Ping, CHEN Shou-Wen*, WANG Jia-Li, ZHANG Xuan, GAO Zhi-Lin, ZHANG Sha,.... Syntheses and Properties of Directly Crosslinked Sulfonated Poly(arylene ether sulfone)s for Proton Exchange Membrane Fuel Cells. Chem. J. Chinese Universities, 2009, 30(11): 2306.

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