用于质子交换膜燃料电池的聚醚砜/磺化聚酰亚胺共混膜的特性

Characteristics of polyethersulfone/sulfonated polyimide blend membrane for proton exchange membrane fuel cell.

作者信息

Wang L, Yi B L, Zhang H M, Xing D M

机构信息

Proton Exchange Membrane Fuel Cell Key Materials and Technology Laboratory, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, Liaoning 116023, People's Republic of China.

出版信息

J Phys Chem B. 2008 Apr 10;112(14):4270-5. doi: 10.1021/jp710704v. Epub 2008 Mar 19.

DOI:10.1021/jp710704v

PMID:18348564

Abstract

Solution-cast membranes from sulfonated polyimide (SPI) and its blend were prepared from polyethersulfone (PES) and SPI. The water uptake and swelling were tested and compared between the SPI membrane and the four kinds of blend membranes. Through comparison of the stability of the membranes, we concluded that the PES could greatly increase the stability of the whole membrane and restrict the swelling. However, the PES did not decrease the water uptake very much. We also compared the fuel cell performance with different membranes. The performance was decreased when the content of the PES in the blend membrane increased. The loss of the fuel cell performance with the blend membranes did not decrease very much before the content of the PES was exceeded 20%. It was prospected that the blend membrane could increase the stability of the SPI and, more importantly, even replace the commercial Nafion membranes.

摘要

由聚醚砜（PES）和磺化聚酰亚胺（SPI）制备了SPI及其共混物的溶液浇铸膜。对SPI膜和四种共混膜的吸水率和溶胀情况进行了测试和比较。通过比较膜的稳定性，我们得出结论，PES可以大大提高整个膜的稳定性并限制溶胀。然而，PES并没有显著降低吸水率。我们还比较了不同膜的燃料电池性能。当共混膜中PES的含量增加时，性能会下降。在PES含量超过20%之前，共混膜燃料电池性能的损失并没有显著降低。预计共混膜可以提高SPI的稳定性，更重要的是，甚至可以替代商业Nafion膜。