CAJ | 학술논문

通过溶液流延成膜法制备了具有不同离子交换容量（IEC）的全氟磺酸（PFSA）离子交换膜,并测试了其吸水率、电导率、钒离子（Ⅴ（Ⅳ））透过率和选择性系数。研究发现,具有高IEC值的PFSA离子交换膜具有相对较低的Ⅴ（Ⅳ）离子透过率和较高的质子电导率。其中IEC值为1.10mmol/g的PFSA离子交换膜对Ⅴ（Ⅳ）离子具有最高的选择性,其选择性系数为Nafion 117膜的2.97倍。
통과용액류연성막법제비료구유불동리자교환용량（IEC）적전불광산（PFSA）리자교환막,병측시료기흡수솔、전도솔、범리자（Ⅴ（Ⅳ））투과솔화선택성계수。연구발현,구유고IEC치적PFSA리자교환막구유상대교저적Ⅴ（Ⅳ）리자투과솔화교고적질자전도솔。기중IEC치위1.10mmol/g적PFSA리자교환막대Ⅴ（Ⅳ）리자구유최고적선택성,기선택성계수위Nafion 117막적2.97배。
Perfluorosulfonated acid （PFSA） ion exchange membranes, with different ion exchange capacities （IECs）, were prepared by a solution-casting method for vanadium redox flow battery applications. Water uptake, proton conductivity, vanadium ion permeability and selectivity of the PFSA ion exchange membranes were investigated. It is found that membranes with higher IEC values have relatively lower vanadium ion permeability and higher proton conductivity. The highest selectivity of the membranes being characterized was achieved from the PFSA ion exchange membrane with 1.10 mmol/g, which was 2.97 times higher than that of Nafion 117 membrane.