Preparation of Pt/CeO2/HCSs anode electrocatalysts for direct methanol fuel cells
Preparation of Pt/CeO2/HCSs anode electrocatalysts for direct methanol fuel cells
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DOI：
10.1016/j.electacta.2010.08.021
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发表时间：
2010-12
影响因子：
6.6
通讯作者：
Yanchun Zhao;Fengyang Wang;Jianniao Tian;Xiulin Yang;Lu Zhan
中科院分区：
文献类型：
--
作者：
Yanchun Zhao;Fengyang Wang;Jianniao Tian;Xiulin Yang;Lu Zhan
以二氧化硅为模板剂，葡萄糖为碳前驱体，采用简单的水热法制备了中空碳球。制备了负载CeO_2的铂催化剂载体HCSS，并将其应用于直接甲醇燃料电池的阳极催化剂中。用扫描电子显微镜、透射电子显微镜、X射线衍射仪、能谱仪和X射线光电子能谱对样品的组成和结构进行了分析。用循环伏安法(CV)研究了制备的催化剂对甲醇氧化的电催化性能。在550℃下加热1h的Pt/CeO2/HCSS催化剂具有最好的甲醇氧化活性。
Hollow carbon spheres (HCSs) were prepared through a simple hydrothermal method using silica particles and glucose as the template and carbon precursor, respectively. HCSs used as supports for platinum catalysts deposited with cerium oxide (CeO{sub 2}) were prepared for application as anode catalysts in direct methanol fuel cells. The composition and structure of the samples were investigated by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). The electrocatalytic properties of the as-prepared catalysts for methanol oxidation were investigated by cyclic voltammetry (CV). The Pt/CeO{sub 2}/HCSs catalyst heated at 550 {sup o}C for 1 h exhibited the best catalytic activity for methanol oxidation.