Effects of the morphology and structure of carbon spheres on the performance of PtRu/C catalysts for methanol oxidation

Journal Title: Science Paper Online - Year 2008, Vol 3, Issue 3

Abstract

Three kinds of carbon materials synthesized by a hydrothermal method with different diameters and morphologies are selected as the support of PtRu catalysts for direct methanol fuel cells (DMFC). The structure and morphology of the carbon supports and the catalysts are characterized by XRD, SEM and TEM. The specific surface areas of the carbon nanospheres and the electro-catalytic activity of the catalysts supported on different carbon nano/microspheres are evaluated by electrochemical measurements. The results show that the activity of the three different catalysts follow the descending order: carbon nanospheres with the diameter of 100 nm, siamesed carbon spheres with the diameter of 200 nm (for each sphere), carbon microspheres with the diameter of 500 nm, agreed with their sequence of the specific surface areas and the electronic conductivity. The results display that relative high specific surface areas of carbon nanospheres led to a high activity for methanol oxidation.

Authors and Affiliations

ZHU Jing CHEN Jun

Keywords

Related Articles

Study on the surface morphology of sulfide copper ore<br /> in bioleaching experiment<br />

The bioleaching behavior of low-grade copper sulphides under the condition of preferential solution flow was investigated through experiments. The experiment of bioleaching of low-grade copper sulphides under the conditi...

薄纤维层吸声理论和实验研究

薄纤维层如织物、无纺布等既是室内装饰材料,又具有较好的吸声作用。然而根据传统微孔吸声理论,薄纤维层由于微孔通道太短而只能有很小的吸声作用。但是,在背后有空腔时薄纤维层却表现出良好的吸声效果。说明薄纤维层可能具有某种新的吸...

自然边界元法分析薄体结构边界应力

自然边界元法在分析含薄壁结构对象的边界应力时,由于边界源点和对边上的积分单元距离很近,边界积分方程中存在几乎强奇异积分,阻碍了自然边界张量的准确计算,导致分析薄体结构边界应力失效。本文运用分部积分的技巧,给出了自然边界积...

Cd处理下两种土壤中白菜Cd、Zn吸收<br /> 与器官分配的生育期变化<br />

白菜是南方的主要食用叶菜类蔬菜, 关于其Cd吸收积累特点及土壤、品种及其交互作用的影响了解尚少。本文采用盆栽实验研究了两个白菜(Brassica Chinensis L.) 品种四月慢(SYM)和高梗白(GGB)与在添加Cd (2mgCd/kg土) 贺不添加Cd处理下对两种...

图像重建的分块迭代算法

图像重建重新投影(Reconstruction Re-projection)的迭代算法已在投影视野受限(Limited Field of View, LFOV)的情况下使用。视野受限情况下投影数据被截断。此处投影采用平行光束,扇形光束或锥形光束。该迭代算法对消除由于投影数据某...

Download PDF file
  • EP ID EP118578
  • DOI -
  • Views 128
  • Downloads 0

How To Cite

ZHU Jing CHEN Jun (2008). Effects of the morphology and structure of carbon spheres on the performance of PtRu/C catalysts for methanol oxidation. Science Paper Online, 3(3), 209-213. https://europub.co.uk/articles/-A-118578