Self-supported NbSe2 nanosheet arrays for highly efficient ammonia electrosynthesis under ambient conditions

doi:10.1016/j.jcat.2019.10.029

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	Self-supported NbSe2 nanosheet arrays for highly efficient ammonia electrosynthesis under ambient conditions
	Wang, Yong 4; Chen, Anran 4; Lai, Shuhua 3; Peng, Xianyun 3; Zhao, Shunzheng 1; Hu, Guangzhi 4; Qiu, Yuan 3; Ren, Junqiang 2; Liu, Xijun 3; Luo, Jun 3
刊名	Journal of Catalysis
	2020
卷号	381 页码:78-83
关键词	Ammonia Density functional theory Efficiency Electrocatalysts Electrolytes Electrolytic reduction Hydrogen Nanosheets Reaction kinetics Selenium compounds Sodium sulfate Aqueous electrolyte Electro reduction Faradaic efficiencies Hydrogen evolution Nano-architecture NH3 electrosynthesis Reversible hydrogen electrodes Self-supported
ISSN号	00219517
DOI	10.1016/j.jcat.2019.10.029
英文摘要	As a promising alternative to the Haber–Bosch process for producing NH3, the electrocatalytic nitrogen reduction reaction (NRR) in the aqueous electrolyte has attracted much attention. However, the presence of sluggish reaction kinetics and competitive hydrogen evolution could result in poor activity and unsatisfactory selectivity. Herein, self-supported NbSe2 nanosheet arrays have been prepared and tested as electrocatalysts for NH3 electrosynthesis with a Faradaic efficiency of 13.9 ± 1.0% at −0.4 V versus the reversible hydrogen electrode (vs RHE) and a yield rate of 89.5 ± 6.0 μg h−1 mgcat.−1 at −0.45 V vs RHE in 0.1 M Na2SO4 under ambient conditions. Moreover, this electrocatalyst showed excellent durability during the 60-h electrolysis (no stable decay of Faradaic efficiencies and NH3 yield rates). Furthermore, density functional theory calculations disclosed that NbSe2 can effectively catalyze the dissociation of the adsorbed N2 molecule and thus promote the NRR process. © 2019 Elsevier Inc.
语种	英语
出版者	Academic Press Inc.
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115804]
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设计艺术学院继续教育学院
作者单位	1.Department of Environmental Engineering, University of Science and Technology Beijing, Beijing; 100083, China; 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 3.Center for Electron Microscopy and Tianjin Key Lab of Advanced Functional Porous Materials, Institute for New Energy Materials and Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin; 300384, China; 4.School of Chemical Science and Technology, School of Energy, Yunnan University, Kunming; 650091, China;
推荐引用方式 GB/T 7714	Wang, Yong,Chen, Anran,Lai, Shuhua,et al. Self-supported NbSe2 nanosheet arrays for highly efficient ammonia electrosynthesis under ambient conditions[J]. Journal of Catalysis,2020,381:78-83.
APA	Wang, Yong.,Chen, Anran.,Lai, Shuhua.,Peng, Xianyun.,Zhao, Shunzheng.,...&Luo, Jun.(2020).Self-supported NbSe2 nanosheet arrays for highly efficient ammonia electrosynthesis under ambient conditions.Journal of Catalysis,381,78-83.
MLA	Wang, Yong,et al."Self-supported NbSe2 nanosheet arrays for highly efficient ammonia electrosynthesis under ambient conditions".Journal of Catalysis 381(2020):78-83.