首次使用原位水解的方法成功制备了聚丙烯/二氧化硅（PP/SiO2）纳滤膜,在PP膜表面形成了一层致密的SiO2纳米聚合层,同时在膜的截面形成了由SiO2连接而成的提供离子传输的通道;该膜制备成本低,制备工艺简单环保,相较于Nafion115膜具有非常优异的防水迁移性能和较好的离子选择透过性,具有较好的充放电循环性能,在50 m A/cm2电流密度下,充放电循环40圈后,库伦效率及能量效率分别保持在94.5%和75.4%。
摘要(英文)：
In this work the polypropylene/ silicon dioxide（PP/SiO2） nanofiltration membranes were successfully prepared the first time by using the in situ hydrolysis method. PP/SiO2 nanofiltration membrane showed good ion selectivity and good cycle performance in vanadium redox flow battery compared with Nafion115 membrane. The battery assembled with PP/SiO2 nanofiltration membrane exhibited good columbic efficiency（CE） and energy efficiency（EE） under 50 m A/cm2 current density. After 40 cycles, the CE and EE maintained above 94.5% and 75.4%, respe...
