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题名: A novel Ir/CeO2-C nanoparticle electrocatalyst for the hydrogen oxidation reaction of alkaline anion exchange membrane fuel cells
作者: Qin, Bowen1, 2;  Yu, Hongmei1;  Chi, Jun1, 2;  Jia, Jia1, 2;  Gao, Xueqiang1, 2;  Yao, Dewei1, 2;  Yi, Baolian1;  Shao, Zhigang1
刊名: RSC ADVANCES
发表日期: 2017
DOI: 10.1039/c7ra03675b
卷: 7, 页:31574-31581
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Alkaline anion exchange membrane fuel cells have faster kinetics for the oxygen reduction reaction (ORR) than proton exchange membrane fuel cells; however, the hydrogen oxidation reaction (HOR) at anodes with precious metals is more sluggish under alkaline conditions than that under acidic conditions, which hinders the further development of fuel cells. Herein, a novel catalyst, iridium nanoparticle-supported ceria-carbon black (10% Ir/CeO2-C), was developed for use in the hydrogen oxidation reaction (HOR) under basic conditions. Cyclic voltammetry reveals that the electrochemical surface area of 10% Ir/CeO2-C is 1.5 times that of 10% Ir/C. The RDE measurement suggests that the exchange current density of 10% Ir/CeO2-C is 2.4 times that of 10% Ir/C, and the mass activity and specific activity of 10% Ir/CeO2-C for HOR are greater than those of 10% Ir/C by 2.8 fold and 1.8 fold, respectively. The effective prevention of the agglomeration of the highly dispersed Ir nanoparticles could be ascribed to the strong metal-support interaction between Ir and CeO2, and the promoted electrocatalytic activity would benefit from the oxophilic effect due to the higher oxygen storage-release capacity of ceria. Thus, 10% Ir/CeO2-C would be a good candidate for use at the anode of alkaline anion exchange membrane fuel cells.
关键词[WOS]: COATED COPPER NANOWIRES ;  HIGH-PERFORMANCE ;  ANODE CATALYST ;  CARBON ;  PLATINUM ;  ELECTROLYTES ;  CO ;  ELECTROOXIDATION ;  ELECTRODES ;  KINETICS
语种: 英语
WOS记录号: WOS:000404076400051
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152130
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Grp, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100039, Peoples R China

Recommended Citation:
Qin, Bowen,Yu, Hongmei,Chi, Jun,et al. A novel Ir/CeO2-C nanoparticle electrocatalyst for the hydrogen oxidation reaction of alkaline anion exchange membrane fuel cells[J]. RSC ADVANCES,2017,7:31574-31581.
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