物理化学学报 >> 2011, Vol. 27 >> Issue (08): 1886-1892.doi: 10.3866/PKU.WHXB20110737

电化学和新能源 上一篇    下一篇

磺化聚醚砜/薄水铝石复合质子交换膜的性能

文胜1,3, 龚春丽3, 蔡芳昌1, 叶正涛1,2   

  1. 1. 湖北大学材料科学与工程学院, 武汉 430062;
    2. 武汉纺织大学化学与化工学院, 武汉 430073;
    3. 孝感学院化学与材料科学学院, 湖北 孝感 432000
  • 收稿日期:2011-03-01 修回日期:2011-04-15 发布日期:2011-07-19
  • 通讯作者: 叶正涛 E-mail:jyeh@mail.ntust.edu.tw
  • 基金资助:

    湖北省自然科学基金(2010CDB00301)资助项目

Properties of SPES/AlOOH Composite Proton Exchange Membranes

WEN Sheng1,3, GONG Chun-Li3, TSAI Fang-Chang1, YEH Jen-Taut1,2   

  1. 1. Faculty of Material Science and Engineering, Hubei University, Wuhan 430062, P. R. China;
    2. Faculty of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, P. R. China;
    3. Faculty of Chemistry and Materials Science, Xiaogan University, Xiaogan 432000, Hubei Province, P. R. China
  • Received:2011-03-01 Revised:2011-04-15 Published:2011-07-19
  • Contact: YEH Jen-Taut E-mail:jyeh@mail.ntust.edu.tw
  • Supported by:

    The project was supported by the Natural Science Foundation of Hubei Province, China (2010CDB00301).

摘要:

为了提高膜的阻醇性能和高温下的质子传导性, 在磺化聚醚砜(SPES)中掺杂一种吸湿性的无机物AlOOH, 制备了一种新型的SPES/AlOOH复合质子交换膜. 并经傅里叶变换红外(FTIR)光谱、热失重(TGA)、扫描电镜(SEM)等手段对膜的结构和性能进行了表征. 结果表明: 复合膜较纯SPES膜具有更高的热稳定性和吸水率; SEM图片显示AlOOH在膜中分布均匀. 复合膜在高温下具有良好的质子传导性, 掺杂量为10%(w)的复合膜在120 °C下的质子传导率仍可保持在0.014 S·cm-1左右; 随着AlOOH含量的增加, 复合膜的阻醇性能大大提高, 这表明该复合膜在直接甲醇燃料电池中具有良好的应用前景.

关键词: 磺化聚醚砜, AlOOH, 复合膜, 直接甲醇燃料电池

Abstract:

Novel sulfonated polyether sulfone (SPES)/AlOOH organic/inorganic composite membranes were prepared by doping SPES with AlOOH, which lowered the methanol crossover and increased the proton conductivity at high temperatures. The structure and performance of the obtained membranes were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM) etc. Compared with the pure SPES membrane the composite membranes had higher thermal stability and water uptake. The morphology of the composite membranes indicated that AlOOH was uniformly distributed throughout the SPES matrix. The network-like structure began to form when the AlOOH content was around 10%. The proton conductivity was still ca 0.014 S·cm-1 even at a temperature as high as 120 °C. Additionally, the methanol resistance improved greatly as the content of AlOOH increased. The SPES/AlOOH composite membrane is a promising candidate for direct methanol fuel cell (DMFC) applications.

Key words: Sulfonated poly(ether sulfone), AlOOH, Composite membrane, Direct methanol fuel cell

MSC2000: 

  • O646