FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis

doi:10.1016/j.nanoen.2020.105078

	FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis
	Liu, Wei 1; Han, Lili 1,2; Wang, Hsiao-Tsu 3; Zhao, Xueru 4; Boscoboinik, J. Anibal 5; Liu, Xijun 1; Pao, Chih-Wen 6; Sun, Jiaqiang 7; Zhuo, Longchao 8; Luo, Jun1
	2020-11-01
发表期刊	Nano Energy
ISSN	22112855
卷号	77
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
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
DOI	10.1016/j.nanoen.2020.105078
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20203008965751
EI主题词	Molybdenum metallography
来源库	Compendex
分类代码	543.3 Molybdenum and Alloys - 545.1 Iron - 545.2 Iron Alloys - 547.1 Precious Metals - 761 Nanotechnology - 803 Chemical Agents and Basic Industrial Chemicals - 804 Chemical Products Generally - 804.2 Inorganic Compounds - 911.2 Industrial Economics - 931.3 Atomic and Molecular Physics - 933 Solid State Physics
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115746
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院继续教育学院
作者单位	1.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; 2.Department of Physics and Astronomy, University of California, Irvine; CA; 92697, United States; 3.Department of Physics, Tamkang University, New Taipei City 251, Taiwan; 4.Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin Unviersity, Tianjin; 300072, China; 5.Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton; NY; 11973, United States; 6.National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan; 7.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi; 030001, China; 8.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an; 710048, China; 9.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
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).