聚乳酸乙醇酸纤维增强全氟磺酸复合质子交换膜的研究

摘要

以具有良好亲水性的聚乳酸乙醇酸(poly-lactide-co-glycolide,PLGA)纳米纤维制备了Nafion/PLGA复合质子交换膜,其屈服强度、断裂强度和弹性模量达到10.5,19和147.8MPa,优于相同条件下的Nafion均质膜.Nafion/PLGA复合质子交换膜电导率达到0.053 S/cm,结构致密、单电池开路电压达到0.96 V,并在100～900 mA/cm2的欧姆极化控制区域呈现良好的性能.%The approach in this research is developing a composite proton exchange membrane with poly-lactide-co-glycolide (PLGA) fibers and perfluorosulfonic acid (PFSA, Nafion) ionomers. With the high strength and conductive PLGA fibers, the yield strength, breaking strength and elastic modulus of the Nafion/PLGA composite membrane achieved 10. 5, 19 and 147. 8 Mpa, respectively. The proton conductivity of Nafion/PLGA composite membrane was 0. 053 S/cm. The single fuel cell assembled with the Nafion/PLGA composite membrane had a high open circuit voltage of 0. 96 V and performed well at ohmic polarization (100~900 mA/cm2).