全氟磺酸离子交换重铸膜的结构与性能研究

本文研究全氟磺酸离子交换重铸膜的结构、性能并与Nafion 膜进行比较 .结果表明 :重铸膜FYM 115 0与Nafion 膜的成分相同 ,但它们具有不同的结构 ,FYM 115 0干膜中含有部分 5 0～30 0nm不贯穿断面的小孔 ,而Nafion112干膜为无孔密实结构 ;FYM 115 0的力学性能优于Nafion 膜 ;受多孔结构的影响 ,在高电流密度端 ,使用FYM 115 0制备的膜电极 ,其电池性能也优于Nafion112膜

An Investigation on Microstructure and Performance of the Recasting Perfluorosulfonated Membrane

The microsturcture and performance of the recasting perfluorosulfonated membrane were investigated by comparison with Nafion . The results indicated that although chemical components of the recasting membrane FYM1150 kept the same as Nafion , the dry FYM1150 differed from dry Nafion  membrane in structure, the former possessed some small pores which are not through-holes having a diameter of 50～300 nm while the latter had almost no pores; The mechanical properties of the FYM1150 were better than those of Nafion ; The discharge performance at high current density of MEA using FYM1150 membrane as an electrolyte was also better than one using Nafion  as electrolyted due to the porous structure in the FYM1150.