气候变化领域集成服务门户(CCPortal): Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction

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DOI	10.1039/c8ee00611c
	Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction
	Liu J.; Ji Y.; Nai J.; Niu X.; Luo Y.; Guo L.; Yang S.
发表日期	2018
ISSN	17545692
起始页码	1736
结束页码	1741
卷号	11 期号:7
英文摘要	Cost efficient and long-term stable catalysts are in great demand for the oxygen evolution reaction (OER), a key process involved in water splitting cells and metal-air batteries. Here, we demonstrate that the ultrathin amorphous cobalt-vanadium hydr(oxy)oxide we synthesized is a highly promising electrocatalytic material for the OER with a low overpotential of 0.250 V (even lower down to 0.215 V when supported on Au foam) at 10 mA cm-2 and a long stable operation time (170 h) in alkaline media. In combination with in situ X-ray absorption spectral characterization and first-principles simulations, we reveal that the ultrathin, amorphous and alloyed structural characteristics have enabled its facile transformation to the desirable active phase, leading to a dramatically enhanced catalytic activity. Our finding highlights the remarkable advantages of the two-dimensional amorphous material and sheds new light on the design of high-performance electrocatalysts. © 2018 The Royal Society of Chemistry.
英文关键词	Amorphous materials; Catalyst activity; Cobalt; Electrocatalysts; Hydraulic servomechanisms; Oxygen; Secondary batteries; Spectrum analyzers; X ray absorption; Electrocatalytic materials; Enhanced catalytic activity; First-principles simulations; Metal-air battery; Oxygen evolution reaction; Spectral characterization; Stable catalysts; Structural characteristics; Amorphous alloys; alkalinity; catalysis; catalyst; chemical reaction; fuel cell; inorganic compound; oxygen; performance assessment; simulation; transformation
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/190192
作者单位	School of Chemistry, Beijing Advanced Innovation Center for Biomedical Engineering, Beihang University, Beijing, 100191, China; Department of Theoretical Chemistry and Biology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, SE-106 91, Sweden; Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China; Department of Chemistry, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, Hong Kong; Guangdong Key Lab of Nano-Micro Material Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen, China
推荐引用方式 GB/T 7714	Liu J.,Ji Y.,Nai J.,et al. Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction[J],2018,11(7).
APA	Liu J..,Ji Y..,Nai J..,Niu X..,Luo Y..,...&Yang S..(2018).Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction.Energy & Environmental Science,11(7).
MLA	Liu J.,et al."Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction".Energy & Environmental Science 11.7(2018).