全钒液流电池用PP/SiO_2纳滤膜的制备及性能研究  

Study on PP/SiO_2 Nanofiltration(NF) Membrane for Vanadium Redox Flow Battery Application

作　　者：刘再春[1] 王治安[2] 黄黎 张凯[1] 吴致远[1] 焦海稳 李瑞莲[1] 王辉宪[1] 吴雄伟[1,3] LIU Zai-chun WANG Zhi-an HUANG Li ZHANG Kai WU Zhi-yuan JIAO Hai-wen LI Rui-lian WANG Hui-xian WU Xiong-wei(College of Science, College of Resource ＆ Environment, Hunan Agricultural University, Changsha 410128, China School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China Department of Food, Hunan Food and Drug Vocational College, Changsha 410208, China)

机构地区：[1]湖南农业大学理学院资源与环境学院,湖南长沙410128 [2]中南大学化学化工学院,湖南长沙410083 [3]湖南食品药品职业学院食品系,湖南长沙410208

出　　处：《广州化学》2017年第1期6-11,30,共7页Guangzhou Chemistry

基　　金：湖南省教育厅重点项目(15A091)

摘　　要：首次使用原位水解的方法成功制备了聚丙烯/二氧化硅(PP/SiO_2)纳滤膜,在PP膜表面形成了一层致密的SiO_2纳米聚合层,同时在膜的截面形成了由SiO_2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%。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%, respectively. Its preparation process was very environmental-friendly. This membrane showed highly commercial application prospects for the vanadium redox flow batteries.

关 键 词：聚丙烯隔膜 纳滤膜 全钒液流电池 

分 类 号：TQ051.8[化学工程]