Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media

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	Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media
	Tian, Ziqi; Chen, Liang; Su, Jianwei; Ge, Ruixiang; Jiang, Kemin; Dong, Yan; Hao, Fei; Chen, Guoxin
刊名	ADVANCED MATERIALS
	2018
卷号	30 期号:29
关键词	Hydrogen-evolution Efficient Electrocatalyst Nanowire Arrays Water Nanoparticles Catalyst Oxidation Strategy Surface Metals
英文摘要	Here, a facile and novel strategy for the preparation of Cu-doped RuO2 hollow porous polyhedra composed of ultrasmall nanocrystals through one-step annealing of a Ru-exchanged Cu-BTC derivative is reported. Owing to the optimized surface configuration and altered electronic structure, the prepared catalyst displays a remarkable oxygen evolution reaction (OER) performance with low overpotential of 188 mV at 10 mA cm(-2) in acidic electrolyte, an ultralow Tafel slope of 43.96 mV dec(-1), and excellent stability in durability testing for 10 000 cycles, and continuous testing of 8 h at a current density of 10 mA cm(-2). Density functional theory calculations reveal that the highly unsaturated Ru sites on the high-index facets can be oxidized gradually and reduce the energy barrier of rate-determining steps. On the other hand, the Cu dopants can alter the electronic structures so as to further improve the intrinsic OER activity.
学科主题	Engineering ; Polymer Science
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17306]
专题	2018专题
推荐引用方式 GB/T 7714	Tian, Ziqi,Chen, Liang,Su, Jianwei,et al. Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media[J]. ADVANCED MATERIALS,2018,30(29).
APA	Tian, Ziqi.,Chen, Liang.,Su, Jianwei.,Ge, Ruixiang.,Jiang, Kemin.,...&Chen, Guoxin.(2018).Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media.ADVANCED MATERIALS,30(29).
MLA	Tian, Ziqi,et al."Assembling Ultrasmall Copper-Doped Ruthenium Oxide Nanocrystals into Hollow Porous Polyhedra: Highly Robust Electrocatalysts for Oxygen Evolution in Acidic Media".ADVANCED MATERIALS 30.29(2018).