中文摘要：

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Nafion^TM212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／cm^2下降到18mA／cm^2，其组装的单电池具有更好的开路电压和输出性能。

英文摘要：

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.