纳米Au-Nafion自组装阻醇质子交换膜的制备与性能  

Synthesis and Performance of Au Nanoparticles Self-Assembly Methanol-Blocking Proton Exchange Membrane

作　　者：宛朝辉[1] 唐浩林[1] 潘牧[1] 木士春[1] 袁润章[1] 

机构地区：[1]武汉理工大学材料复合新技术国家重点实验室,湖北武汉430070

出　　处：《稀有金属材料与工程》2007年第1期134-137,共4页Rare Metal Materials and Engineering

基　　金：教育部博士点基金(20020497001);国家自然科学基金(20576106)资助

摘　　要：采用醇还原的方法合成了聚阳离子(聚二烯丙基二甲基氯化铵,PDDA),颗粒的zeta电位为+32mV,粒径约4nm。在静电引力作用下将聚阳离子修饰的金颗粒组装到NafionTM212膜表面制成抗甲醇渗透质子交换膜。在60℃,2mol/L的甲醇溶液中,甲醇渗透电流由168mA/cm2下降到18mA/cm2,其组装的单电池具有更好的开路电压和输出性能。The polycation （poly（diallyldimethylammonium chloride）,PDDA） modified Au particles were prepared by ethanol reducing. Au particles showed zeta potential of ＋32 mV and size of about 4 nm. With the coulomb gravitation, the polycation modified Aa nano-particles were self-assembled onto the NationTM 212 membrane surface to form methanol blocking proton exchange membranes, and the methanol crossover decreased from 168 mA/cm^2 to 18 mA/cm^2 at the condition of 2 mol/L methanol at 60℃. All the self-assembled single cells have higher open circuit voltage （OCV） and performance than original Nafion212 membrane.

关 键 词：DMFC 甲醇渗透 质予交换膜 自组装 Au纳米颗粒 

分 类 号：TB383.1[一般工业技术—材料科学与工程]