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首页> 外文期刊>International Journal of Electrochemical Science >Synthesis of PtxPdy Nanoparticles Decorated Functionalized Carbon Nanotubes as Highly Anodic Catalysts for Formic Acid Fuel Cells
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Synthesis of PtxPdy Nanoparticles Decorated Functionalized Carbon Nanotubes as Highly Anodic Catalysts for Formic Acid Fuel Cells

机译：Pt x Pd y 纳米粒子的合成修饰功能化碳纳米管作为甲酸燃料电池的高阳极催化剂

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PtxPdy catalysts with various compositions onto functionalized carbon nanotubes (CNTs) wereprepared by improved polyol method to study their electrocatalytic activities toward a formic acidoxidation. Carbon nanotubes as supports (CNTs) were functionalized by acid solutions and thedifferent atomic weight ratios of Pt to Pd supported the functionalized CNTs were prepared. X-raydiffraction (XRD) and transmission electron microscopy (TEM) were used to investigate the catalystmorphologies and particle size distributions. A uniform dispersion of alloyed microstructure PtxPdyparticles with diameters ranging between 2-4 nm was obtained. The effect of different surfacecompositions of various PtxPdy /CNTs alloy particles on electrocatalytic formic acid oxidation wereinvestigated by cyclic voltammetry (CV) and chronoamperometry (CA). The results showed anexcellent activities and stabilities which are indicated by its lower onset potential and higher currentdensity. Moreover, the PdPt/CNTs catalyst was obtained higher superior electrocatalytic activity thanthe other PtxPdy catalysts and the commercial PtRu/C.
机译：采用改进的多元醇法制备了功能化碳纳米管（CNTs）上具有各种组成的PtxPdy催化剂，以研究其对甲酸氧化的电催化活性。通过酸溶液将碳纳米管作为载体（CNT）进行功能化，制备了负载的Pt与Pd的原子比不同的碳纳米管。 X射线衍射（XRD）和透射电子显微镜（TEM）被用来研究催化剂的形态和粒径分布。获得直径在2-4nm之间的合金化微结构PtxPdy颗粒的均匀分散体。通过循环伏安法（CV）和计时电流法（CA）研究了各种PtxPdy / CNTs合金颗粒的不同表面组成对电催化甲酸氧化的影响。结果显示其优异的活动性和稳定性，这由其较低的起始电位和较高的电流密度表示。此外，PdPt / CNTs催化剂比其他PtxPdy催化剂和市售PtRu / C具有更高的优异电催化活性。

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