Preparation and characterization of quaternized poly(vinyl alcohol)/chitosan/MoS2 composite anion exchange membranes with high selectivity

被引:57
作者
Jiang, Xiancai [1 ]
Sun, Yujun [1 ]
Zhang, Hongxiang [1 ]
Hou, Linxi [1 ]
机构
[1] Fuzhou Univ, Sch Chem Engn, Fuzhou 350108, Fujian, Peoples R China
基金
中国国家自然科学基金;
关键词
Quaternized poly(vinyl alcohol); Chitosan; Direct methanol alkaline fuel cells; Molybdenum disulfide; Anion exchange membrane; SOLID ELECTROLYTES; CHITOSAN; ALCOHOL); MOS2; PERFORMANCE; NANOCOMPOSITES; EXFOLIATION; STABILITY; SOLVENT;
D O I
10.1016/j.carbpol.2017.10.023
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
In this study, a series of novel quaternized poly(vinyl alcohol)/chitosan/molybdenum disulfide (QPVA/CS/ MoS2) anion exchange membranes (AEMs) were prepared for direct methanol alkaline fuel cell (DMAFC). The composite membrane was synthesized by adding different amounts of MoS2 nanosheets (0, 0.1, 0.2, 0.5 and 1 wt %) 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/MoS2 membranes were characterized by X-ray diffraction, thermogravimetric analysis, tensile testing, ion exchange capacity, and methanol permeability measurements, respectively. The MoS2 was homogeneously dispersed in the membranes. The mechanical strength of the composite membranes was enhanced with the addition of MoS2. With the addition of 1.0 wt% MoS2, the QPVA/CS/MoS2 composite membrane has the lowest methanol permeability of 0.210 x10(-7) cm(2) . s(-1). This study confirmed that the novel QPVA/CS/MoS2 membrane would be a potential candidate for the application in DMAFCs.
引用
收藏
页码:96 / 103
页数:8
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