CAJ | 학술논문

以聚丙烯膜(PP)为基体,采用浸渍法制备了新型质子交换膜Nation/PP膜.并通过掺杂的方式制备了复合膜TiO_2/Nafion/PP.采用扫描电镜仪(SEM),红外光谱对复合膜进行了表征,测定了膜的质子交换容量和电导率,并考察了以两种复合膜作为隔膜的液流钒电池的电化学性能.结果表明:TiO_2掺杂改性以后.TiO_2/Nafion/PP的质子交换容量为0.729 8 mmol/g,含水率为17.86%,分别比Nafion/PP膜提高了75%和117%,复合膜电导率比Nafion/PP提高了27%.电化学测试结果表明:以TiO_2Nafion/PP为隔膜的模拟液流钒电池电池效率为67.76%,显示出优良的循环稳定性.
이취병희막(PP)위기체,채용침지법제비료신형질자교환막Nation/PP막.병통과참잡적방식제비료복합막TiO_2/Nafion/PP.채용소묘전경의(SEM),홍외광보대복합막진행료표정,측정료막적질자교환용량화전도솔,병고찰료이량충복합막작위격막적액류범전지적전화학성능.결과표명:TiO_2참잡개성이후.TiO_2/Nafion/PP적질자교환용량위0.729 8 mmol/g,함수솔위17.86%,분별비Nafion/PP막제고료75%화117%,복합막전도솔비Nafion/PP제고료27%.전화학측시결과표명:이TiO_2Nafion/PP위격막적모의액류범전지전지효솔위67.76%,현시출우량적순배은정성.
New types of proton exchange membranes Nafion/PP and TiO_2/Nafion/PP based on PP which were prepared by the method of soaking and TiO_2 doping were introduced into the vanadium redox flow battery (VRB). SEM and IR spectra were taken to characterize the membranes. Ion exchange capacity (IEC), electrical conductivity and electrochemical performance of VRB with the composite membranes had also been investigated. The results show that the electrical conductivity of the composite membrane increases about 27% after mixed with TiO_2; the cell efficiency of VRB employing TiO_2/Nafion/PP composite membrane with a IEC value of 0.729 8 mmol/g and a hydrous ratio of 17.86% which are respectively 75% and 117% higher than Nafion/PP membrane is 67.76%; the cycle stability of the VRB with the composite membrane performs well.