Pt-Ru Catalysts Prepared by a Modified Polyol Process for Direct Methanol Fuel Cells  

作　　者：ZHANG Junmin ZHU Fangfang ZHANG Kunhua LIU Weiping GUAN Weiming 

机构地区：[1]State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Kunming Institute of Precious Metals,Kunming 650106,China

出　　处：《贵金属》2012年第A01期222-226,共5页Precious Metals

摘　　要：Supported PtRu/C catalysts used in direct methanol fuel cells (DMFCs) were prepared by a new modified polyol method. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and cyclic voltammograms (CVs) were carried out to characterize the morphology, composition and the electrochemical properties of the PtRu/C catalyst. The results revealed that the PtRu nanoparticles with small average particle size (≈2.5 nm), and highly dispersed on the carbon support. The PtRu/C catalyst exhibited high catalytic activity and anti poisoned performance than that of the JM PtRu/C. It is imply that the modified polyol method is efficient for PtRu/C catalyst preparation.Supported PtRu/C catalysts used in direct methanol fuel cells （DMFCs） were prepared by a new modified polyol method. Transmission electron microscopy （TEM）, X-ray diffraction （XRD） and cyclic voltammograms （CVs） were carried out to characterize the morphology, composition and the electrochemical properties of the PtRu/C catalyst. The results revealed that the PtRu nanoparticles with small average particle size （≈2.5 nm）, and highly dispersed on the carbon support. The PtRu/C catalyst exhibited high catalytic activity and anti-poisoned performance than that of the JM PtRu/C. It is imply that the modified polyol method is efficient for PtRu/C catalyst preparation.

关 键 词：PtRu/C catalysts modified polyol method direct methanol fuel cells(DMFCs) electrochemical performance 

分 类 号：O643.36[理学—物理化学]