气候变化领域集成服务门户(CCPortal): Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting

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DOI	10.1039/c7ee01571b
	Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting
	Yu L.; Zhou H.; Sun J.; Qin F.; Yu F.; Bao J.; Yu Y.; Chen S.; Ren Z.
发表日期	2017
ISSN	17545692
起始页码	1820
结束页码	1827
卷号	10 期号:8
英文摘要	Developing highly active and low-cost electrocatalysts with superior durability for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is a grand challenge to produce hydrogen by electrolysis of water. Here, we report on a facile and scalable approach to fabricate highly efficient three-dimensional (3D) bulk catalysts of core-shell nanostructures, in which few-layer NiFe layered double hydroxide (LDH) nanosheets are grown on Cu nanowire cores supported on Cu foams, toward overall water splitting. Remarkably, benefiting from the 3D hierarchical nanoarchitecture with large surface areas, fast electron transport, and open-channels for effective gas release, the resulting 3D self-standing catalysts exhibit outstanding OER activity as well as excellent HER performance in an alkaline medium. Using them as bifunctional catalysts for overall water splitting, a current density of 10 mA cm-2 was achieved at a voltage of 1.54 V, and 100 mA cm-2 at 1.69 V with excellent durability, which is much better than the benchmark of IrO2(+)//Pt(-) electrodes. Our 3D core-shell electrocatalysts significantly advance the research towards large-scale practical water electrolysis. © The Royal Society of Chemistry 2017.
英文关键词	Binary alloys; Catalyst activity; Catalysts; Durability; Electrocatalysts; Electrolysis; Electron transport properties; Hydrogen; Iron alloys; Nanosheets; Nanowires; Nickel alloys; Shells (structures); Bi-functional catalysts; Bifunctional electrocatalysts; Core shell nano structures; Fast electron transport; Hydrogen evolution reactions; Layered double hydroxide nanosheets; Layered double hydroxides; Oxygen evolution reaction; Hydrogen production
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190430
作者单位	College of Physical Science and Technology, Central China Normal University, Wuhan, 430079, China; Department of Physics and TcSUH, University of Houston, Houston, TX 77204, United States; Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, United States
推荐引用方式 GB/T 7714	Yu L.,Zhou H.,Sun J.,et al. Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting[J],2017,10(8).
APA	Yu L..,Zhou H..,Sun J..,Qin F..,Yu F..,...&Ren Z..(2017).Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting.Energy & Environmental Science,10(8).
MLA	Yu L.,et al."Cu nanowires shelled with NiFe layered double hydroxide nanosheets as bifunctional electrocatalysts for overall water splitting".Energy & Environmental Science 10.8(2017).