Fabrication of NiSe2 by direct selenylation of a nickel surface
Sun, HL; Liang, ZF; Shen, KC; Luo, M; Hu, JB; Huang, H; Zhu, ZY; Li, ZJ; Jiang, Z; Song, F
2018
发表期刊APPLIED SURFACE SCIENCE
ISSN0169-4332
卷号428页码:623-629
文章类型期刊论文
摘要The emergence of transition metal dichalcogenides (TMD) as an exciting class of materials with appealing potentials in electronic and optoelectronics has drawn intensive attention in the past few years. Herein, we report the fabrication of NiSe2, which has been predicted to be a promising candidate in the field of electrocatalyst, by direct selenylation of the nickel substrate after epitaxial growth of selenium on a nickel foil. With a combination of photoelectron spectroscopy (PES), X-ray diffraction (XRD), scanning electron microscopy (SEM) and density function theory (DFT) calculations, it is possible to identify the phase transition among the previously reported stable Ni-Se phases and the ultimate formation of NiSe2 species by external annealing at varying temperatures. While SEM reveals the morphology of NiSe2 film with flat terraces, XRD, XPS and DFT calculations demonstrate that NiSe2 is the relatively stable phase formed on the Ni substrate from the cohesive energy point of view. Furthermore, valence band spectra point out the nonmetallic level of these different Ni-Se compounds, agreeing well with literature reports. In the end, our report may indicate a feasible approach to synthesize the pure NiSe2 species under solution-free condition and an encouraging step forward towards non-noble electrocatalysts. (C) 2017 Elsevier B.V. All rights reserved.
关键词Transition-metal-dichalcogenide Sensitized Solar-cells Solid-state Synthesis Hydrothermal Synthesis Electronic-structure Nanowire Film Thin-films Efficient Electrocatalyst Growth
DOI10.1016/j.apsusc.2017.09.201
收录类别SCI
语种英语
WOS记录号WOS:000415227000078
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29016
专题中科院上海应用物理研究所2011-2018年
作者单位1.Sun, HL
2.Liang, ZF
3.Shen, KC
4.Luo, M
5.Hu, JB
6.Huang, H
7.Zhu, ZY
8.Li, ZJ
9.Jiang, Z
10.Song, F
推荐引用方式
GB/T 7714
Sun, HL,Liang, ZF,Shen, KC,et al. Fabrication of NiSe2 by direct selenylation of a nickel surface[J]. APPLIED SURFACE SCIENCE,2018,428:623-629.
APA Sun, HL.,Liang, ZF.,Shen, KC.,Luo, M.,Hu, JB.,...&Song, F.(2018).Fabrication of NiSe2 by direct selenylation of a nickel surface.APPLIED SURFACE SCIENCE,428,623-629.
MLA Sun, HL,et al."Fabrication of NiSe2 by direct selenylation of a nickel surface".APPLIED SURFACE SCIENCE 428(2018):623-629.
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