Preparation of Pt/CeO₂/HCSs anode electrocatalysts for direct methanol fuel cells

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• 作者：Yanchun Zhao ; Fengyang Wang ; Jianniao Tian ; Xiulin Yang ; Lu Zhan
• 关键词：Methanol electrooxidation ; Pt– ; CeO₂ catalysts ; Hollow carbon spheres ; Direct methanol fuel cell
• 刊名：Electrochimica Acta
• 出版年：2010
• 出版时间：1 December 2010
• 年：2010
• 卷：55
• 期：28
• 页码：8998-9003
• 全文大小：971 K

文摘

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 (CeO₂) 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/CeO₂/HCSs catalyst heated at 550 °C for 1 h exhibited the best catalytic activity for methanol oxidation.