关键词: 燃料电池, MOFs材料, 溶胀动力学, 溶胀行为

Abstract: 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.

Key words: Fuel cell, MOFs materials, Swelling kinetics, Swelling behavior