气候变化领域集成服务门户(CCPortal): Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst

CCPortal

DOI	10.1039/c8ee01129j
	Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst
	Ma Y.-Y.; Lang Z.-L.; Yan L.-K.; Wang Y.-H.; Tan H.-Q.; Feng K.; Xia Y.-J.; Zhong J.; Liu Y.; Kang Z.-H.; Li Y.-G.
发表日期	2018
ISSN	17545692
起始页码	2114
结束页码	2123
卷号	11 期号:8
英文摘要	Exploring high-performance electrocatalysts for sustainable hydrogen production is an essential prerequisite of a further hydrogen economy. Integrating multiple interfaces in two-component electrocatalysts is expected to be a feasible strategy to optimize the intrinsic electronic structure of hybrid catalysts and improve their catalytic property. Herein, we report a new type of multi-interfacial nickel/tungsten carbide (Ni/WC) hybrid nanoparticles anchored on N-doped carbon sheets (Ni/WC@NC), which can efficiently and robustly catalyze the hydrogen evolution reaction (HER) with striking kinetic metrics in a wide pH range. In 0.5 M H2SO4, Ni/WC@NC displays a low overpotential (53 mV at current density of 10 mA cm-2), a small Tafel slope (43.5 mV dec-1), a high exchange current density (0.83 mA cm-2), as well as excellent stability, outperforming most of the current noble-metal-free electrocatalysts. A series of controlled experiments, DFT calculations and in situ XAS measurements reveal that the remarkable HER activity is mainly attributed to abundant interfaces between Ni and WC domains, which induce a synergistic optimization of the electronic configuration of Ni and WC through electron transfer process from WC to Ni along with potential mass transport, thus promoting the HER kinetics and accelerating the reaction. Our work suggests a potentially powerful interface-engineering strategy for designing high-performance electrocatalysts for the HER. © 2018 The Royal Society of Chemistry.
英文关键词	Carbides; Doping (additives); Electrolysis; Electron transport properties; Electronic structure; Hydrogen fuels; Hydrogen production; Nickel compounds; Precious metals; Reaction kinetics; Slope stability; Controlled experiment; Electron transfer process; Electronic configuration; Exchange current densities; Hydrogen evolution reactions; Interface engineering; Intrinsic electronics; Metal-free electrocatalysts; Electrocatalysts; catalysis; catalyst; chemical reaction; electrochemical method; electron; experimental study; hydrogen; inorganic compound; kinetics; optimization; perforation; reaction kinetics
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/190178
作者单位	Key Laboratory of Polyoxometalate Science, Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China; Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China
推荐引用方式 GB/T 7714	Ma Y.-Y.,Lang Z.-L.,Yan L.-K.,et al. Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst[J],2018,11(8).
APA	Ma Y.-Y..,Lang Z.-L..,Yan L.-K..,Wang Y.-H..,Tan H.-Q..,...&Li Y.-G..(2018).Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst.Energy & Environmental Science,11(8).
MLA	Ma Y.-Y.,et al."Highly efficient hydrogen evolution triggered by a multi-interfacial Ni/WC hybrid electrocatalyst".Energy & Environmental Science 11.8(2018).