Polymer electrolyte membranes based on poly(phenylene ether)s with sulfonic acid via long alkyl side chains
作者:Xuan Zhang、Li Sheng、Teruaki Hayakawa、Mitsuru Ueda、Tomoya Higashihara
DOI:10.1039/c3ta12026k
日期:——
A series of poly(phenylene ether)s with sulfonic acid groups via long alkyl side chains, SPPEs, were successfully prepared as proton exchange membranes for fuel cells. The new monomer, bis[4-fluoro-3-(p-methoxylbenzoyl)]biphenyl (BFMBP), containing two pendent methoxyphenyl groups was synthesized by the Friedel–Crafts reaction of 5-chloro-2-fluorobenzoyl chloride with anisole, followed by the nickel-mediated
成功地制备了一系列通过长烷基侧链具有磺酸基的聚苯醚SPPE作为燃料电池的质子交换膜。通过5-氯-2-氟苯甲酰氯与苯甲醚的Friedel-Crafts反应,合成了含有两个侧基甲氧基苯基的新单体双[4-氟-3-(对甲氧基苯甲酰基)]联苯(BFMBP)。镍介导的均偶联反应。然后,在碳酸钾存在下,通过BFMBP与二羟基单体的芳香亲核取代缩聚反应成功地获得了聚苯醚。磺化PPE(SPPE)(IEC:1.96–2.45定量g -1可以通过含酚单元的PPE与1,4-丁磺酸内酯的反应制备。通过溶液流延法,SPPEs产生了具有良好机械性能的透明膜,并显示出良好的氧化和尺寸稳定性,以及高质子电导率,例如在80°C的30%相对湿度下为8.60×10 -3 S cm -1。比Nafion 117高。