全钒氧化还原液流电池用Nafion/有机硅复合膜  

Nafion/Organic Silica Hybrid Membrane for Vanadium Redox Flow Battery

作　　者：滕祥国[1] 赵永涛[1,2] 席靖宇[1] 武增华[1] 邱新平[1,2] 陈立泉[1,3] 

机构地区：[1]清华大学深圳研究生院绿色化学电源实验室,深圳518055 [2]清华大学化学系有机光电子与分子工程重点实验室,北京100084 [3]中国科学院物理研究所固体离子学实验室,北京100080

出　　处：《化学学报》2009年第6期471-476,共6页Acta Chimica Sinica

基　　金：国家重点基础研究发展计划(973计划)(No.2009CB220105)资助项目

摘　　要：采用原位化学反应的方法制备了Nafion/有机硅复合膜,并对所制备复合膜的离子交换容量(IEC)、电导率和水渗透率等进行了测试.结果表明,所制备复合膜具有优异的阻水性能.以Nafion/有机硅复合膜作为离子交换膜的钒电池的库仑效率(CE)和能量效率(EE)都得到了大幅度提高.此外,以所制备复合膜为离子交换膜的VRB单电池充放电80次后性能几乎无衰减,说明所制备Nafion/有机硅复合膜即使在强酸和强氧化性的钒电池体系中也可以稳定使用,表明Nafion/有机硅复合膜是一种性能优异的适用于全钒氧化还原液流电池的新型质子交换膜.Nation/organic silica hybrid membrane was prepared via an in situ sol-gel reaction method and the ion exchange capacity （IEC）, conductivity and water transport rate of the hybrid membrane were measured. Results indicate that compared with Nation membrane, the hybrid membrane can efficiently block water transfer across the membrane. The average coulombic efficiency and energy efficiency of the VRB with the Nation/organic silica membrane were all remarkably increased. Furthermore, the Nation/organic silica hybrid membrane is very stable for more than 80 charge-discharge cycles at current density of 60 mA·cm^-2. Results show that the Nation/organic silica membrane is a novel hybrid membrane and applicable to VRB.

关 键 词：钒电池 NATION 有机硅复合膜 

分 类 号：TM911[电气工程—电力电子与电力传动]