Preparation and characterization of sulfonated poly(ether sulfone)/sulfonated poly(ether ether ketone) blend membrane for vanadium redox flow battery
Preparation and characterization of sulfonated poly(ether sulfone)/sulfonated poly(ether ether ketone) blend membrane for vanadium redox flow battery
复制标题
DOI：
10.1016/j.memsci.2012.05.014
复制
发表时间：
2012-10-01
影响因子：
9.5
通讯作者：
Yan, Chuanwei
中科院分区：
文献类型：
--
作者：
Ling, Xiao;Jia, Chuankun;Yan, Chuanwei
制备了一种用于钒液流电池（VRB）的磺化聚醚砜（SPES）/磺化聚醚醚酮（SPEEK）共混膜（SPES/SPEEK膜），并对其进行了表征。利用原子力显微镜（AFM）对SPEES/SPEEK膜的溶胀行为和吸水率进行了表征。结果表明，SPES/SPEEK膜具有较强的机械强度、较高的吸水率和较低的VO 2+渗透率。与使用Nafion 212膜相比，使用SPES/SPEEK膜的VRB单电池的性能显示出显著更低的充电容量损失、更高的库仑效率（CE）和能量效率（EE）（分别为98%对91%和84%对79.5%）。SPEES/SPEEK膜在100次循环（265 h以上）中表现出良好的电池性能，CE和EE没有明显下降。SPES/SPEEK膜具有良好的性能和低成本，在VRB中具有良好的应用前景。(c)2012 Elsevier B. V.保留所有权利。
A blend membrane consisting of sulfonated poly(ether sulfone) (SPES) and sulfonated poly(ether ether ketone) (SPEEK) (we name it as SPES/SPEEK membrane) for vanadium redox flow battery (VRB) has been fabricated and characterized. The swelling behavior and water uptake of SPES/SPEEK membrane are evaluated in terms of the morphology phase characterization by atom force microscopy (AFM). The results indicate that SPES/SPEEK membrane possesses significantly strong mechanical strength, high water uptake and low permeability of VO2+ ions. The performance of VRB single cell with SPES/SPEEK membrane shows significantly lower charge capacity loss, higher coulombic efficiency (CE) and energy efficiency (EE) (98% vs. 91% and 84% vs. 79.5%, respectively) compared to that with Nafion 212 membrane. Furthermore, the SPES/SPEEK membrane presents good cell performance up to 100 cycles (more than 265 h) with no significant decline in CE and EE. With all the good properties and low cost, the SPES/SPEEK membrane shows promising prospects for application in VRB. (c) 2012 Elsevier B.V. All rights reserved.