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CeO2形貌对Pt基阳极催化剂性能的影响
作者:郭瑞华1 2 3 郭乐乐1 2 张捷宇3 周国治3 安胜利1 2 
单位:(1. 内蒙古科技大学材料与冶金学院 内蒙古 包头 014010  2. 内蒙古自治区先进陶瓷材料与器件重点实验室 内蒙古 包头 014010  3. 上海大学材料科学与工程学院 上海 200072) 
关键词:铂基阳极催化剂 帚状二氧化铈 石墨烯 催化氧化能力 
分类号:TM911.4
出版年,卷(期):页码:2018,46(7):0-0
DOI:
摘要:

采用水热合成法在不同温度(300、400和500 ℃)下制备了比表面积分别为174.72、120.15和101.13 m2/g,孔径均在2~4 nm范围的帚状CeO2。通过微波辅助乙二醇还原氯铂酸法制备了CeO2修饰的石墨烯负载Pt(Pt-CeO2/C)催化剂。探究不同焙烧温度制备的CeO2对Pt-CeO2/C催化剂微观结构及电催化性能的影响。结果表明:随帚状CeO2焙烧温度的降低,催化剂的催化性能、稳定性及抗中毒能力随之增强。添加了帚状CeO2的Pt-CeO2/C催化剂的催化性能、稳定性和抗中毒能力优于传统的Pt/C。帚状CeO2焙烧温度为300 ℃时,Pt-CeO2/C催化剂的电催化性能最好,其电化学活性表面积为102.83 m2/g,峰电流密度为757.17 A/g,1 100 s的稳态电流密度为108.17 A/g。

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参考文献:
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