FeMo sub-nanoclusters/single atoms for neutral ammonia electrosynthesis | |
Liu, Wei5; Han, Lili5,6; Wang, Hsiao-Tsu7; Zhao, Xueru8; Boscoboinik, J. Anibal1; Liu, Xijun5; Pao, Chih-Wen9; Sun, Jiaqiang2; Zhuo, Longchao3; Luo, Jun5 | |
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 |
语种 | 英语 |
出版者 | Elsevier Ltd |
内容类型 | 期刊论文 |
源URL | [http://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 Functional Nanomaterials, Brookhaven National Laboratory, Upton; NY; 11973, United States; 2.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan; Shanxi; 030001, China; 3.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an; 710048, China; 4.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 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.Department of Physics and Astronomy, University of California, Irvine; CA; 92697, United States; 7.Department of Physics, Tamkang University, New Taipei City 251, Taiwan; 8.Institute of New-Energy Materials, School of Materials Science and Engineering, Tianjin Unviersity, Tianjin; 300072, 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). |
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