Atomic iridium@cobalt nanosheets for dinuclear tandem water oxidation

doi:10.1039/c9ta01088b

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Atomic iridium@cobalt nanosheets for dinuclear tandem water oxidation
	Babu, DD ; Huang, YY ; Anandhababu, G ; Wang, X ; Si, R ; Wu, MX ; Li, QH ; Wang, YB ; Yao, JN
刊名	JOURNAL OF MATERIALS CHEMISTRY A
	2019
卷号	7 期号:14 页码:8376—8383
关键词	OXYGEN EVOLUTION REACTION GRAPHITIC CARBON NITRIDE EFFICIENT CATALYST RU IR ELECTROCATALYST HYDROGENATION ELECTROLYSIS OXIDES
ISSN号	2050-7488
DOI	10.1039/c9ta01088b
文献子类	期刊论文
英文摘要	Atomization of noble metals enable their electrocatalysis applications with low cost, whereas the isolated mononuclear site after atomization might lead leads to limited performance. Herein, we present a general strategy of atomically confined alloying (ACA) to synthesize an electrocatalyst of single atom iridium-trapping cobalt nanosheets with dual-reactive Ir-Co sites. The atomic Ir@Co nanosheets (1.7 wt% Ir) exhibit excellent oxygen evolution reaction (OER) performance with a small overpotential (273 mV at 10 mA cm(-2)) and high stability, higher than that of the Ir/C catalyst (290 mV at 10 mA cm(-2)). More importantly, density functional theory (DFT) calculations combined with experiments demonstrated that water oxidation proceeded on atomic Ir@Co nanosheets via a dinuclear tandem mechanism, in which Ir-Co dual sites cooperatively worked in favour of the sequential transfer from Co-OH* to Ir-O* via a Co-O-Ir intermediate, and stabilization of OOH* species by hydrogen bonding interaction. The cooperative mechanism based on a dinuclear electrocatalyst by ACA is hoped to open up more possibilities of single atom noble metal electrocatalysts for various applications.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31480]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, 239 Zhangheng Rd, Shanghai 201204, Peoples R China; 2.Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China 3.Chinese Acad Sci, CAS Key Lab Design & Assembly Funct Nanostruct, Fujian Prov Key Lab Nanomat,State Key Lab Struct, Key Lab Optoelect Mat Chem & Phys,Fujian Inst Res, Fuzhou 350002, Fujian, Peoples R China;
推荐引用方式 GB/T 7714	Babu, DD,Huang, YY,Anandhababu, G,et al. Atomic iridium@cobalt nanosheets for dinuclear tandem water oxidation[J]. JOURNAL OF MATERIALS CHEMISTRY A,2019,7(14):8376—8383.
APA	Babu, DD.,Huang, YY.,Anandhababu, G.,Wang, X.,Si, R.,...&Yao, JN.(2019).Atomic iridium@cobalt nanosheets for dinuclear tandem water oxidation.JOURNAL OF MATERIALS CHEMISTRY A,7(14),8376—8383.
MLA	Babu, DD,et al."Atomic iridium@cobalt nanosheets for dinuclear tandem water oxidation".JOURNAL OF MATERIALS CHEMISTRY A 7.14(2019):8376—8383.