基于金属有机框架构筑的阴离子交换膜溶胀性能研究  

Research on Swelling Performance of Anion Exchange Membranes Based on Metal Organic Framework

作　　者：马钰 王璐璐[1] 王吉林[1,2] Ma Yu;Wang Lulu;Wang Jilin(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;School of Environmental and Safety Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001 [2]辽宁石油化工大学环境与安全工程学院,辽宁抚顺113001

出　　处：《石油化工高等学校学报》2021年第3期24-30,共7页Journal of Petrochemical Universities

基　　金：辽宁省科技厅博士启动项目(20141126);辽宁省教育厅科学研究一般项目(L2013153);辽宁石油化工大学博士启动基金(2013XJJ-006)。

摘　　要：在阴离子交换膜燃料电池工作过程中,OH-的传输需借助水分子作为媒介,因此在阴离子交换膜的性能中,吸水性能是除电导率以及耐碱稳定性以外的一项重要指标,同时也是阴离子交换膜改进研究的重点。制备了两种基于金属有机框架(MOFs)材料构筑的复合膜用作阴离子交换膜,并对其晶体结构和形貌分别进行了XRD、SEM表征;对其含水率、溶胀度、溶胀动力学以及机械性能进行了详细的测试和分析。结果表明,两种复合膜的含水率、溶胀度以及机械性能存在明显差异,同时尽管两种膜的溶胀动力学行为均满足Schott二级溶胀动力学方程,但是由于添加的两种MOFs材料的功能不同,导致两种复合膜表现出不同的溶胀行为。In the operation process of anion exchange membrane fuel cell,water molecules are working as the transmission medium of OH-.Therefore,hygroscopic property is one of the most important performances of anion exchange membranes,in addition to conductivity and alkali resistance stability.It is also the focus of research on the improvement of anion exchange membranes.In this paper,two series of anion exchange membranes for fuel cells based on metal organic framework(MOFs)materials were prepared,and their crystal structures and morphologies were characterized by XRD and SEM.In addition,the water content,swelling degree,swelling kinetics,and mechanical properties were tested and analyzed in detail.The results show that the water content,swelling degree,and mechanical properties of the two membranes are much different.Though the swelling kinetic behavior of the two prepared membranes follow Schott's second⁃order swelling kinetic equation,but exhibit different swelling behaviors,due to the different functions of the two component of MOFs.

关 键 词：燃料电池 MOFs材料 溶胀动力学 溶胀行为 

分 类 号：TQ425.236[化学工程]