School of Chemical Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China.
School of Chemical Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China.
Carbohydr Polym. 2018 Jan 15;180:96-103. doi: 10.1016/j.carbpol.2017.10.023. Epub 2017 Oct 5.
In this study, a series of novel quaternized poly(vinyl alcohol)/chitosan/molybdenum disulfide (QPVA/CS/MoS) anion exchange membranes (AEMs) were prepared for direct methanol alkaline fuel cell (DMAFC). The composite membrane was synthesized by adding different amounts of MoS nanosheets (0, 0.1, 0.2, 0.5 and 1wt%) into QPVA/CS mixture solution and using the solution casting method. The crystallinity, thermal and mechanical properties, ion conductivity and resistance to methanol of the QPVA/CS/MoS membranes were characterized by X-ray diffraction, thermogravimetric analysis, tensile testing, ion exchange capacity, and methanol permeability measurements, respectively. The MoS was homogeneously dispersed in the membranes. The mechanical strength of the composite membranes was enhanced with the addition of MoS. With the addition of 1.0wt% MoS, the QPVA/CS/MoS composite membrane has the lowest methanol permeability of 0.210×10cm·s. This study confirmed that the novel QPVA/CS/MoS membrane would be a potential candidate for the application in DMAFCs.
在这项研究中，我们制备了一系列新型季铵化聚乙烯醇/壳聚糖/二硫化钼（QPVA/CS/MoS）阴离子交换膜（AEMs），用于直接甲醇碱性燃料电池（DMAFC）。通过将不同量的 MoS 纳米片（0、0.1、0.2、0.5 和 1wt%）加入到 QPVA/CS 混合溶液中，并采用溶液浇铸法，合成了复合膜。采用 X 射线衍射、热重分析、拉伸试验、离子交换容量和甲醇渗透率测试分别对 QPVA/CS/MoS 膜的结晶度、热稳定性和力学性能、离子电导率和甲醇抗渗透性进行了表征。MoS 在膜中均匀分散。随着 MoS 的加入，复合膜的力学强度得到增强。当添加 1.0wt% MoS 时，QPVA/CS/MoS 复合膜的甲醇渗透率最低，为 0.210×10cm·s。这项研究证实，新型 QPVA/CS/MoS 膜有望成为 DMAFC 应用的潜在候选材料。
