中文摘要：

采用磁控溅射法在聚四氟乙烯（PTFE）微孔膜表面溅射CeO2,制备了CeO2/PTFE复合膜.利用接触角、X射线光电子能谱（XPS）、扫描电子显微镜（SEM）和拉伸强度等对复合膜的亲水性、元素组成、形貌和机械强度进行测试,研究了溅射时间和溅射功率对膜性能的影响.结果表明,在溅射功率为40 W,溅射时间为120 s时,CeO2/PTFE复合膜亲水性和拉伸强度都相对较好.在CeO2/PTFE复合膜上浇铸Nafion树脂,制备的CeO2/PTFE/Nafion复合膜含水率达到30%,离子电导率达到0.071 S/cm.

英文摘要：

CeO2/ PTFE composite membranes（ PTFE = polytetrafluoroethylene） were prepared by magnetron sputtering CeO2 on the surface of PTFE microporous membranes. The membranes were characterized by XPS and SEM. The properties of the membranes,such as contact angle,tensile strength were investigated. It was found that high quality CeO2/ PTFE composite membranes were obtained under the optimized magnetron sputtering： sputtering time of 120 s and magnetic sputtering power of 40 W. The CeO2/ PTFE composite membranes exhibited better comprehensive performance： favorable hydrophibility and tensile strength. In order to improve the performance of CeO2/ PTFE composite membranes,CeO2/ PTFE / Nafion composite membranes were prepared by Nafion casting. The properties of the composite membrane such as water uptake,ion conductivity were investigated. The water uptake and ion conductivity of CeO2/ PTFE / Nafion composite membranes were 30%,0. 071 S / cm,respectively.