Encased Copper Boosts the Electrocatalytic Activity of N-Doped Carbon Nanotubes for Hydrogen Evolution

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	Encased Copper Boosts the Electrocatalytic Activity of N-Doped Carbon Nanotubes for Hydrogen Evolution
	Zhang, Yun 1,2; Ma, Yuling 1,2; Chen, Yu-Yun 2; Zhao, Lu 2,3; Huang, Lin-Bo 2; Luo, Hao 2; Jiang, Wen-Jie 2; Zhang, Xing 2,3; Niu, Shuai 2; Gao, Daojiang 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2017-10-25
卷号	9 期号:42 页码:36857-36864
关键词	Her Electrocatalysis Electronic Modulation Nanostructures Hydrogen Production
英文摘要	Nitrogen (N)-doped carbons combined with transition-metal nanoparticles are attractive as alternatives to the state-of-the-art precious metal catalysts for hydrogen evolution reaction (HER). Herein, we demonstrate a strategy for fabricating three-dimensional (3D) Cu-encased N-doped carbon nanotube arrays which are directly grown on Cu foam (Cu@NC NT/CF) as a new efficient HER electrocatalyst. Cu nanoparticles are encased here instead of common transition metals (Fe, Co, or Ni) for pursuing a well-controllable morphology and an excellent activity by taking advantage of its more stable nature at high temperature and in acidic or alkaline electrolyte. It is discovered that metallic Cu exhibits strong electronic modulation on N-doped carbon to boost its electrocatalytic activity for HER. Such a nanostructure not only offers plenty of accessible highly active sites but also provides a 3D conductive open network for fast electron/mass transfer and facilitates gas escape for prompt mass exchange. As a result, the Cu@NC NT/CF electrode exhibits superior HER performance and durability, outperforming most of the reported M@NC materials. Furthermore, the etching experiments together with X-ray photoelectron spectroscopy (XPS) analysis reveal that the electronic modulation from encased Cu significantly enhances the HER activity of N-doped carbon. These findings open up opportunities for exploring other Cu-based nanomaterials as efficient electrocatalysts and understanding their catalytic processes.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39094]
专题	化学研究所_分子纳米结构与纳米技术实验室
作者单位	1.Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610068, Sichuan, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, CAS Res Educ Ctr Excellence Mol Sci, Inst Chem, 2 North First St, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yun,Ma, Yuling,Chen, Yu-Yun,et al. Encased Copper Boosts the Electrocatalytic Activity of N-Doped Carbon Nanotubes for Hydrogen Evolution[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(42):36857-36864.
APA	Zhang, Yun.,Ma, Yuling.,Chen, Yu-Yun.,Zhao, Lu.,Huang, Lin-Bo.,...&Hu, Jin-Song.(2017).Encased Copper Boosts the Electrocatalytic Activity of N-Doped Carbon Nanotubes for Hydrogen Evolution.ACS APPLIED MATERIALS & INTERFACES,9(42),36857-36864.
MLA	Zhang, Yun,et al."Encased Copper Boosts the Electrocatalytic Activity of N-Doped Carbon Nanotubes for Hydrogen Evolution".ACS APPLIED MATERIALS & INTERFACES 9.42(2017):36857-36864.