Characterization of SPEEK/Y_2O_3 proton exchange membrane treated with high magnetic field

作     者：童菊英 郭强 谭孝林 李夏 李丹 董云凤 

作者机构：School of Materials Science and Engineering Shanghai University School of Wenling Zhejiang TV University 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2011年第29卷第6期

页      面：604-608页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China (50975167) Shanghai Leading Academic Discipline Project (S30107) Wenling Science and Technology Bureau (29-01-31) for continuing support on this research 

主　　题：SPEEK/Y2O3 composite membrane high magnetic field proton conductivity rare earths 

摘      要：The membranes of sulfonated poly（etheretherketone） of 48.3% sulfonation degree doped with Y2O3 were prepared, and then treated with parallel high magnetic field of 6 and 12 T at 120 oC for 4 h, respectively. The small-angle X-ray scattering revealed that the struc- ture of the composite membranes would be changed by high magnetic field treatment. The cross-section morphology of the composite membranes by a scanning electron microscope showed that the Y2O3 could be dispersed evenly in the composite membranes which were relatively smooth and compact but formed small conglomeration with increasing Y2O3 content and treating high magnetic field. The water uptake of membranes would be reduced with Y2O3 content increasing, but not be modified by the treatment of high magnetic field. The proton conductivity of membranes would be increased with temperature rising from 20 to 60 oC, and improved under high magnetic field, which could all exceed 10–2 S/cm at 75% relative humidity, but decrease with doping content of Y2O3 from 2 wt.% to 8 wt.%. The methanol permeability of the composite membranes would be decreased with Y2O3 content increasing and slightly reduced after high magnetic field treatment.