High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide

doi:10.1002/smll.201801717

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide
	Yu, P ; Wang, L ; Xie, Y ; Tian, CG ; Sun, FF ; Ma, JY ; Tong, MM ; Zhou, W ; Li, JH ; Fu, HG
刊名	SMALL
	2018
卷号	14 期号:35 页码:-
关键词	IRON PHOSPHIDE NANOPARTICLES OXYGEN REDUCTION REACTION HIGH-PERFORMANCE FEP NANOPARTICLES ION BATTERIES LITHIUM-ION CATALYSTS MICROSPHERES PHOSPHORUS MECHANISM
ISSN号	1613-6810
DOI	10.1002/smll.201801717
文献子类	期刊论文
英文摘要	Development of efficient and durable non-Pt catalysts for hydrogen evolution reaction (HER) in acid media is highly desirable. Iron nitride has emerged as a promising catalyst for its cost-effective nature, but the corresponding acidic stability must be promoted. Herein, phosphorus-decorated Fe2N and reduced graphene oxide (P-Fe2N/rGO) composite are designed and synthesized. X-ray photoelectron spectroscopy and X-ray absorption fine structure (XAFS) show that a thin layer amorphous iron phosphide is coated on the surface of Fe2N nanoparticles, which could be responsible for the well resistance of chemical corrosion in acidic media. Meanwhile, the P-decoration could tune the electronic state and coordination environment of iron atom as evidenced by XAFS, resulting in dramatically enhanced electrocatalytic activity of P-Fe2N/rGO. Density functional theory calculations reveal that both the P-connected N atoms and the Fe atoms in P-Fe2N/rGO catalyst are the main active sites for H* adsorption. The hydrogen-binding free energy vertical bar Delta G(H)*vertical bar value is close to zero for P-Fe2N/rGO, suggesting a good balance between the Volmer and Heyrovsky/Tafel steps in HER kinetics. As expected, P-Fe2N/rGO catalyst could achieve a low eta(onset) of 22.4 mV, a small Tafel plot of 48.7 mV dec(-1), and remarkable stability for HER in acid electrolyte.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/30967]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 2.Heilongjiang Univ, Minist Educ Peoples Republ China, Key Lab Funct Inorgan Mat Chem, Harbin 150080, Heilongjiang, Peoples R China 3.Chinese Acad Sci, Shanghai Inst Appl Phys, SSRF, Shanghai 201204, Peoples R China
推荐引用方式 GB/T 7714	Yu, P,Wang, L,Xie, Y,et al. High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide[J]. SMALL,2018,14(35):-.
APA	Yu, P.,Wang, L.,Xie, Y.,Tian, CG.,Sun, FF.,...&Fu, HG.(2018).High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide.SMALL,14(35),-.
MLA	Yu, P,et al."High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide".SMALL 14.35(2018):-.