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郭瑞华,张捷宇,周国治,安胜利,莫逸杰.直接乙醇燃料电池阳极催化剂Pt-CeO2/C的制备与性能表征[J].稀有金属材料与工程(英文),2018,47(1):383~388.[Guo Ruihua,Zhang Jieyu1,Zhou Guozhi1,An Shengli and Mo Yijie.Preparation and Characterization of Pt-CeO2/C as Catalyst for Direct Ethanol Fuel Cell[J].Rare Metal Materials and Engineering,2018,47(1):383~388.]
Preparation and Characterization of Pt-CeO2/C as Catalyst for Direct Ethanol Fuel Cell
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Received:November 30, 2016  Revised:January 19, 2017
Key words: direct ethanol fuel cell  hollow carbon spheres  CeO2  electrocatalysis
Foundation item:国家自然科学基金资助(51474133),内蒙古科技大学材料与冶金学院青年人才孵化器平台资助项目资助(2014CY012)
Author NameAffiliation
Guo Ruihua,Zhang Jieyu1,Zhou Guozhi1,An Shengli and Mo Yijie  
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      In this paper, size controllable hollow carbon spheres used as catalyst carrier were prepared by hydrothermal synthesis with glucose as the raw material without adding organic template, the self-made flower-like CeO2 with a pore size in the range of 30nm~40nm and a specific surface area of 126m2/g was added as auxiliary catalyst, and the catalyst was prepared by microwave-assisted reduction of chloroplatinic acid with ethylene glycol. The prepared catalyst carrier and auxiliary catalyst were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), infrared spectroscopy (IR), X-ray diffraction (XRD) and specific surface area (BET). The electrochemical performance of the prepared catalyst was tested by electrochemical workstation. The results show that the size distribution of the carbon sphere is between 0.4μm and 0.9μm and the surface contains -OH, -C=O, -COOH oxygen-containing functional groups. The results of electrochemical tests show that compared with the traditional Pt/C catalyst, Pt-CeO2/C catalyst with the addition of flower-like CeO2 has better catalytic activity, stability and anti-CO poisoning capacity. With the decrease of the size of the carbon sphere carrier, the catalytic performance, stability and anti-CO poisoning ability of the catalyst was enhanced. The catalyst was prepared by the carbon spheres as the carrier which were prepared under the condition of glucose concentration of 0.5mol/L and hydrothermal reaction time of 4h and the floral CeO2 as the auxiliary catalyst which has the best activity, stability and anti-CO poisoning capacity for the catalytic oxidation of ethanol.