2022年5月1日 · In this contribution using for the first time in-situ temperature-dependent X-ray Absorption Fine structure spectroscopy (T-XAFS) at Sn and Se K-edge, we showed the occurrence in the XAS data of two isosbestic points, which support the coexistence of two phases in a wide temperature range.

XPS results confirm the incorporation of Ag in the SnSe lattice with 0/+1 valence state, which is evidence for reduced thermal conductivity and enhanced electrical conductivity for Ag codoping in...

2022年6月27日 · The as-designed G-mSnO 2 /SnSe 2 hybrid possesses high conductivity, strong chemical affinity (SnO 2), and a dynamic intercalation–conversion site (Li x SnSe 2), inhibits shuttle behavior, provides rapid Li-intercalative transport kinetics, accelerates LiPS conversion, and decreases the decomposition energy barrier for Li 2 S, which is ...

SnSe crystallizes in the orthorhombic Cmcm space group. The structure is two-dimensional and consists of two SnSe sheets oriented in the (0, 1, 0) direction. Sn2+ is bonded in a rectangular see-saw-like geometry to four equivalent Se2- atoms.

2025年1月16日 · Here, we investigate phase engineering of SnSe X in a hydrothermal route via 1-dodecanethiol (1-DDT), which served as a phase stabilizer, and comprehensively demonstrate phase-dependent NO 2 detection properties. As the 1-DDT concentration increases, we directly confirm that the SnSe structure was gradually transformed to the SnSe 2 one.

2022年11月18日 · The unique electronic structure of SnSe 2 /SnSe modifies the distribution of electrons and the interfacial effect accelerates the transport of ions, which contributes to the enhancement of lithium-ion battery performances. In short, to achieve the ultrahigh specific capacity and robust cycling stability of the lithium-ion battery, the anode ...

We have studied the valence electronic structure of Ag 1−x Sn 1+x Se 2 (x = 0.0, 0.1, 0.2, 0.25) and SnSe (x = 1.0) by a combined analysis of X-ray absorption spectroscopy (XAS) and X-ray photoemission spectroscopy (XPS) measurements.

XAS（synchrotron X-ray absorption spectroscopy）以X射线光子能量作为变量，测定材料的X射线吸收系数。 每个吸收边与材料中存在的特定原子有关，更具体地说，与将特定原子核轨道电子激发到自由或未占据的连续谱水平（轨道的电离）的量子力学转变有关。

2023年2月17日 · In this review, we provide an overview of the fundamental concepts of X-ray absorption spectroscopy (XAS) and then comprehensively review the setup and application of in situ XAS, introducing electrochemical XAS cells, experimental methods, as well as primary functions on catalytic applications.

2021年3月15日 · The density of bulk SnSe was measured using Archimedes’ method. The measurements of Sn K-edge X-ray absorption spectra (XAS) including X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) were performed at TPS 44A beamline at the National Synchrotron Radiation Research Center (NSRRC) in …