摘要
利用溶液再铸法制备了全氟磺酸-聚四氟乙烯共聚物(Nafion~)/磺化氧化锆(SZ)复合膜,借助X射线衍射、扫描电子显微镜、热失重分析仪等研究了所制备复合膜的微观结构、形貌以及性能。结果表明,棒状SZ颗粒以平行于膜表面的方向排列,均匀分布在Nafion~膜的骨架中,改善了膜在中温区的热稳定性;将复合膜用于直接甲醇燃料电池(DMFC)的电解质膜时,使用了3%和6%SZ的Nafion~/SZ复合膜的DMFC在45℃和5mol/L甲醇进料时的峰值输出功率密度分别为46.27、59.47mW/cm2,明显高于同样条件下Nafion膜的38.2mW/cm2。
Composite membranes consisting of sulfated zirconia(SZ)and perfluorosulfonic acidPTFE copolymer(Nafion)were prepared by solution recasting.The microstructure,morphology,and properties of as-synthesized composite membrane were studied by XRD,SEM,and TGA.It showed that rod-like SZ particles were evenly distributed in Nafion membrane matrix,and slightly modified the thermal stability at medium temperature range.Under the conditions of 45℃and 5mol/L methanol,the peak power densities of direct methanol fuel cell(DMFC)with 3%and6% Nafion/SZ composite membranes were 46.27 mW/cm2 and 59.47 mW/cm2,respectively,higher than that of DMFC with pristine Nafion membrane.
出处
《中国塑料》
CAS
CSCD
北大核心
2014年第6期69-72,共4页
China Plastics
基金
国家自然科学基金资助项目(51363011)
关键词
全氟磺酸-聚四氟乙烯共聚物
磺化氧化锆
溶液再铸
复合膜
直接甲醇燃料电池
perfluorosulfonic acid-polytetrafluoroethene copolymer
sulfated zirconia
solution recasting
composite membrane
direct methanol fuel cell
