Electrochemical deposition and dissolution of Fe species for N-doped carbon to understand the degradation mechanism of Pt-free oxygen reduction catalysts

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	Electrochemical deposition and dissolution of Fe species for N-doped carbon to understand the degradation mechanism of Pt-free oxygen reduction catalysts
	Wu, Jiajia1,2 ; Nabae, Yuta 3; Muthukrishnan, Azhagumuthu 3; Ohsaka, Takeo 2
刊名	ELECTROCHIMICA ACTA
	2016-10-01
卷号	214 页码:307-312
关键词	Oxygen reduction reaction Fe-containing nitrogen-doped carbon catalyst Durability test Activity decay Fe electrodeposition
英文摘要	The enhancement in oxygen reduction reaction (ORR) activity is achieved by the introduction of Fe species via the Fe electrochemical deposition-dissolution treatment into a metal-free nitrogen-doped carbon (P-PI) catalyst, which is prepared by the pyrolysis of polyimide fine particles. The thus-obtained Fe-containing P-PI catalyst suffers activity decay during the durability test, evidenced by the negative shift of half-wave potential, the decrease in limiting current density, the number of electrons transferred, and the ratio of the rate constant for 4-electron ORR to that for 2-electron process, and the increase in H2O2 production percentage. The decayed ORR activity can be recovered by another Fe electrochemical deposition-dissolution treatment, demonstrating the predominant role of Fe leaching in activity degradation as well as the effectiveness of the electrochemical treatment in activity restoration. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别	SCI
语种	英语
WOS记录号	WOS:000383827900033
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/135778]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
作者单位	1.Chinese Acad Sci, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 2.Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Elect Chem, Midori Ku, G1-5,4259 Nagatsuta, Yokohama, Kanagawa 2268502, Japan 3.Tokyo Inst Technol, Dept Mat Sci & Engn, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan
推荐引用方式 GB/T 7714	Wu, Jiajia,Nabae, Yuta,Muthukrishnan, Azhagumuthu,et al. Electrochemical deposition and dissolution of Fe species for N-doped carbon to understand the degradation mechanism of Pt-free oxygen reduction catalysts[J]. ELECTROCHIMICA ACTA,2016,214:307-312.
APA	Wu, Jiajia,Nabae, Yuta,Muthukrishnan, Azhagumuthu,&Ohsaka, Takeo.(2016).Electrochemical deposition and dissolution of Fe species for N-doped carbon to understand the degradation mechanism of Pt-free oxygen reduction catalysts.ELECTROCHIMICA ACTA,214,307-312.
MLA	Wu, Jiajia,et al."Electrochemical deposition and dissolution of Fe species for N-doped carbon to understand the degradation mechanism of Pt-free oxygen reduction catalysts".ELECTROCHIMICA ACTA 214(2016):307-312.