【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。更多还原

【Abstract】 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 Au nano-particles were self-assembled onto the NafionTM 212 membrane surface to form methanol blocking proton exchange membranes, and the methanol crossover decreased from 168 mA/cm2 to 18 mA/cm2 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.更多还原