Mesoporous transition metal dichalcogenide ME2 (M = Mo, W; E = S, Se) with 2-D layered crystallinity as anode materials for lithium ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (17) ◽  
pp. 14253-14260 ◽  
Author(s):  
Yoon Yun Lee ◽  
Gwi Ok Park ◽  
Yun Seok Choi ◽  
Jeong Kuk Shon ◽  
Jeongbae Yoon ◽  
...  
Keyword(s):  
Transition Metal ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Transition Metal Dichalcogenides ◽  
Lithium Ion ◽  
Electrochemical Performances ◽  
Transition Metal Dichalcogenide ◽  
Lithium Storage ◽  
Metal Dichalcogenides

Mesoporous transition metal dichalcogenides with 2D layered crystallinity, synthesized through a melting-infiltration assisted nano-replication, exhibit excellent electrochemical performances for lithium-storage.

A general way to fabricate transition metal dichalcogenide/oxide-sandwiched MXene nanosheets as flexible film anodes for high-performance lithium storage

2019 ◽  
Vol 3 (10) ◽  
pp. 2577-2582 ◽  
Author(s):  
Chuang Wang ◽  
Xiao-Dong Zhu ◽  
Ke-Xin Wang ◽  
Liang-Liang Gu ◽  
Sheng-You Qiu ◽  
...  
Keyword(s):  
Transition Metal ◽  
Lithium Ion Battery ◽  
High Performance ◽  
Composite Films ◽  
Transition Metal Dichalcogenides ◽  
Lithium Ion ◽  
Transition Metal Dichalcogenide ◽  
Lithium Storage ◽  
Flexible Film ◽  
Metal Dichalcogenides

Composite films comprising MXene nanosheets sandwiched by transition metal dichalcogenides/oxides are constructed as flexible lithium-ion battery anodes through vacuum-assisted filtration.

scholarly journals Ab initio study of adsorption and diffusion of lithium on transition metal dichalcogenide monolayers

2017 ◽  
Vol 8 ◽  
pp. 2711-2718 ◽  
Author(s):  
Xiaoli Sun ◽  
Zhiguo Wang
Keyword(s):  
Transition Metal ◽  
Lithium Ion Batteries ◽  
Anode Materials ◽  
Lithium Ion ◽  
Transition Metal Dichalcogenide ◽  
Metallic Materials ◽  
First Principles Calculations ◽  
Narrow Bandgap ◽  
The Stability ◽  
And Diffusion

Using first principles calculations, we studied the stability and electronic properties of transition metal dichalcogenide monolayers of the type MX2 (M = Ti, Zr, Hf, V, Nb, Ta, Mo, Cr, W; X= S, Se, Te). The adsorption and diffusion of lithium on the stable MX2 phase was also investigated for potential application as an anode for lithium ion batteries. Some of these compounds were found to be stable in the 2H phase and some are in the 1T or 1T' phase, but only a few of them were stable in both 2H/1T or 2H/1T' phases. The results show that lithium is energetically favourable for adsorption on MX2 monolayers, which can be semiconductors with a narrow bandgap and metallic materials. Lithium cannot be adsorbed onto 2H-WS2 and 2H-WSe2, which have large bandgaps of 1.66 and 1.96 eV, respectively. The diffusion energy barrier is in the range between 0.17 and 0.64 eV for lithium on MX2 monolayers, while for most of the materials it was found to be around 0.25 eV. Therefore, this work illustrated that most of the MX2 monolayers explored in this work can be used as promising anode materials for lithium ion batteries.

scholarly journals Second-harmonic generation enhancement in monolayer transition-metal dichalcogenides by using an epsilon-near-zero substrate

2021 ◽  
Vol 3 (1) ◽  
pp. 272-278
Author(s):  
Pilar G. Vianna ◽  
Aline dos S. Almeida ◽  
Rodrigo M. Gerosa ◽  
Dario A. Bahamon ◽  
Christiano J. S. de Matos
Keyword(s):  
Dielectric Constant ◽  
Transition Metal ◽  
Harmonic Generation ◽  
Nonlinear Effect ◽  
Second Harmonic ◽  
2D Materials ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Metal Dichalcogenides ◽  
Epsilon Near Zero

The scheme illustrates a monolayer transition-metal dichalcogenide on an epsilon-near-zero substrate. The substrate near-zero dielectric constant is used as the enhancement mechanism to maximize the SHG nonlinear effect on monolayer 2D materials.

Size-dependent phase stability in transition metal dichalcogenide nanoparticles controlled by metal substrates

Nanoscale ◽  
2021 ◽  
Author(s):  
Albert Bruix ◽  
Jeppe Vang Lauritsen ◽  
Bjork Hammer
Keyword(s):  
Transition Metal ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Phase Stability ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Metal Substrates ◽  
Size Dependent ◽  
Metal Dichalcogenides

Nanomaterials based on MoS2 and related transition metal dichalcogenides are remarkably versatile; MoS2 nanoparticles are proven catalysts for processes such as hydrodesulphurization and the hydrogen evolution reaction, and transition metal...

Phase-transfer-assisted confinement growth of mesoporous MoS2@graphene van der Waals supraparticles for unprecedented ultrahigh-rate sodium storage

2021 ◽  
Author(s):  
Wenqian Han ◽  
Guannan Guo ◽  
Yan Xia ◽  
Jing Ning ◽  
Yuwei Deng ◽  
...  
Keyword(s):  
Transition Metal ◽  
Anode Materials ◽  
Phase Transfer ◽  
Transition Metal Dichalcogenides ◽  
Rate Capability ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Metal Dichalcogenides ◽  
Sodium Storage ◽  
Low Rate

Transition metal dichalcogenides (TMDs) are promising anode materials for sodium-ion batteries (SIBs), but suffer from low rate capability and poor cycling stability. Here, we describe our efforts in designing a...

scholarly journals Exciton g-factors in monolayer and bilayer WSe2 from experiment and theory

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Jonathan Förste ◽  
Nikita V. Tepliakov ◽  
Stanislav Yu. Kruchinin ◽  
Jessica Lindlau ◽  
Victor Funk ◽  
...  
Keyword(s):  
Transition Metal ◽  
Transition Metal Dichalcogenides ◽  
Transition Metal Dichalcogenide ◽  
Layer Transition ◽  
General Terms ◽  
Indirect Excitons ◽  
Metal Dichalcogenides ◽  
Experimental Findings ◽  
Experimental And Theoretical Studies

Abstract The optical properties of monolayer and bilayer transition metal dichalcogenide semiconductors are governed by excitons in different spin and valley configurations, providing versatile aspects for van der Waals heterostructures and devices. Here, we present experimental and theoretical studies of exciton energy splittings in external magnetic field in neutral and charged WSe2 monolayer and bilayer crystals embedded in a field effect device for active doping control. We develop theoretical methods to calculate the exciton g-factors from first principles for all possible spin-valley configurations of excitons in monolayer and bilayer WSe2 including valley-indirect excitons. Our theoretical and experimental findings shed light on some of the characteristic photoluminescence peaks observed for monolayer and bilayer WSe2. In more general terms, the theoretical aspects of our work provide additional means for the characterization of single and few-layer transition metal dichalcogenides, as well as their heterostructures, in the presence of external magnetic fields.

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