Fabrication of copper-ceria hybrid composite electrode for electrocatalytic oxidation of methanol
来源期刊：JOURNAL OF RARE EARTHS2013年第3期
论文作者：李静 李立军 于宇婷 高艳芳 刘进荣
文章页码：296 - 301
摘 要：Copper-ceria hybrid composite electrode prepared by electrochemical co-deposition was examined for their redox process and electrocatalytic activities towards the oxidation of methanol.The structure and morphology of electrodes were characterized by X-ray diffraction（XRD）and scanning electron microscopy（SEM）,respectively.XRD pattern of the copper-ceria hybrid composite electrode exhibited some diffraction peaks of CeO2 and SEM micrograph showed that it was composed of grains and flakes.The energy dispersive spectroscopy（EDS）spectrum of this area also showed the presence of cerium.Cyclic voltammetry,CO stripping and chronoamperometry were performed to characterize electrocatalytic property of the prepared samples.In cyclic voltammetry studies and chronoamperometry,copper-ceria hybrid composite electrode towards oxidation of methanol showed a significantly higher response and long term stability.CO stripping results indicated the facile removal of intermediate poisoning species CO in the presence of CeO2,which was helpful for CO and methanol electro-oxidation.
李静，李立军，于宇婷，高艳芳，刘进荣
College of Chemical Engineering,Inner Mongolia University of Technology
摘 要：Copper-ceria hybrid composite electrode prepared by electrochemical co-deposition was examined for their redox process and electrocatalytic activities towards the oxidation of methanol.The structure and morphology of electrodes were characterized by X-ray diffraction（XRD）and scanning electron microscopy（SEM）,respectively.XRD pattern of the copper-ceria hybrid composite electrode exhibited some diffraction peaks of CeO2 and SEM micrograph showed that it was composed of grains and flakes.The energy dispersive spectroscopy（EDS）spectrum of this area also showed the presence of cerium.Cyclic voltammetry,CO stripping and chronoamperometry were performed to characterize electrocatalytic property of the prepared samples.In cyclic voltammetry studies and chronoamperometry,copper-ceria hybrid composite electrode towards oxidation of methanol showed a significantly higher response and long term stability.CO stripping results indicated the facile removal of intermediate poisoning species CO in the presence of CeO2,which was helpful for CO and methanol electro-oxidation.
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