High-Efficient, Stable Electrocatalytic Hydrogen Evolution in Acid Media by Amorphous FexP Coating Fe2N Supported on Reduced Graphene Oxide
文献类型：期刊论文
| 作者 | Yu, P; Wang, L; Xie, Y; Tian, CG; Sun, FF; Ma, JY; Tong, MM; Zhou, W; Li, JH; Fu, HG |
| 刊名 | SMALL
 |
| 出版日期 | 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 |
| 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):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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