【摘要】 用三种方法制备了PtRu/C[Pt和Ru质量分数分别为20％和10％,记为PtRu/C(20％-10％)]甲醇阳极催化剂,通过X射线衍射(XRD)和透射电镜(TEM)考察了PtRu/C催化剂的粒子大小和晶格参数的变化,利用单电池实验考察了催化剂在直接甲醇燃料电池中的催化活性。结果表明,改变溶剂的组成提高了贵金属在活性炭表面的分散度,并改善了PtRu间的相互作用,用乙二醇/水/异丙醇混合溶剂制备的PtRu催化剂金属颗粒较小,PtRu间的相互作用较强,以该催化剂作甲醇阳极的直接甲醇燃料电池的性能较好。更多还原

【Abstract】 PtRu/C (20%-10% in mass fraction) catalysts for direct methanol fuel cell(DMFCs) were prepared by three different methods, XRD and TEM were used to characterize the lattice parameter, particle size and distribution of PtRu metal particles. Polarization experiments of single DMFCs were used to investigate the activity of different PtRu/C anode catalysts directly. It is found that the PtRu/C synthesized in a mixture solvent including ethylene glycol, water and isopropanol has a smaller metal particle size and more improved interaction between Pt and Ru. The single DMFC adopting the PtRu/C as anode catalyst shows a better performance.更多还原