FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis

doi:10.1016/j.nanoen.2020.105078

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	FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis
	Liu, Wei 5; Han, Lili 4,5; Wang, Hsiao-Tsu 3; Zhao, Xueru 2; Boscoboinik, J. Anibal 1; Liu, Xijun 5; Pao, Chih-Wen 9; Sun, Jiaqiang 8; Zhuo, Longchao 7; Luo, Jun 5
刊名	Nano Energy
	2020-11-01
卷号	77
关键词	Ammonia Atoms Binary alloys Catalyst activity Cost effectiveness Doping (additives) Electrocatalysts Electrolytes Iron Iron alloys Iron metallography Molybdenum Nanoclusters Nitrogen Precious metals X ray photoelectron spectroscopy Ambient conditions Ambient-pressure x-ray photoelectron spectroscopies Bimetallic electrocatalysts Faradaic efficiencies Neutral electrolytes Nitrogen saturation Nitrogen-doped carbons Non-noble metal catalysts
ISSN号	22112855
DOI	10.1016/j.nanoen.2020.105078
英文摘要	Electrochemical N2 reduction reaction (NRR) has long been regarded as a promising process to generate NH3 under ambient conditions. Therefore, developing cost-effective and high-performance non-noble-metal catalysts for NRR is highly desirable. Inspired by the biological nitrogenase structure, we here designed and synthesized a catalyst with iron-molybdenum sub-nanoclusters and single atoms on porous nitrogen-doped carbon (FeMo/NC). The catalyst features porous structure beneficial to active site exposure and accessibility to electrolyte as well as FeMo sub-nanoclusters and single atoms enabling to activate N2 molecular. In situ near-ambient pressure X-ray photoelectron spectroscopy tests reveal that during the process from vacuum to nitrogen saturation, N2 was close to, adsorbed on and interacted with Fe and Mo in FeMo/NC. The Fe and Mo through electron transfer play a key role in activating the N2 molecules. Therefore, when tested for NRR, FeMo/NC achieves the maximum Faradaic efficiency (FE) of 11.8 ± 0.8% at −0.25 V and NH3 yield rate of 26.5 ± 0.8 μg h−1 mgcat.−1 at −0.3 V in neutral electrolyte. Moreover, the catalyst exhibits ignorable variations in the FE and a slight decrease in current density for 100,000 s. This work develops a non-precious bimetallic electrocatalyst with synergetic effect capability for efficient NH3 production and provides a guideline for the design of efficient and robust catalysts with coexistence of sub-nanoclusters and single atoms. © 2020 Elsevier Ltd
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000581738300011
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151171]
专题	继续教育学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton; NY; 11973, United States; 2.Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin Unviersity, Tianjin; 300072, China; 3.Department of Physics, Tamkang University, New Taipei City 251, Taiwan; 4.Department of Physics and Astronomy, University of California, Irvine; CA; 92697, United States; 5.Center for Electron Microscopy and Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin; 300384, China; 6.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 7.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an; 710048, China; 8.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi; 030001, China; 9.National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan;
推荐引用方式 GB/T 7714	Liu, Wei,Han, Lili,Wang, Hsiao-Tsu,et al. FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis[J]. Nano Energy,2020,77.
APA	Liu, Wei.,Han, Lili.,Wang, Hsiao-Tsu.,Zhao, Xueru.,Boscoboinik, J. Anibal.,...&Xin, Huolin L..(2020).FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis.Nano Energy,77.
MLA	Liu, Wei,et al."FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis".Nano Energy 77(2020).