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7 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on MoS3(NCl4)2 by Materials Project

MoNSCl6NS2Cl2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four MoNSCl6 clusters and four NS2Cl2 clusters. In each MoNSCl6 cluster, Mo6+ is bonded in a distorted octahedral geometry to one N4+ and five Cl1- atoms. The Mo–N bond length is 1.80 Å. There are a spread of Mo–Cl bond distances ranging from 2.34–2.50 Å. N4+ is bonded in a distorted linear geometry to one Mo6+ and one S2- atom. The N–S bond length is 1.56 Å. S2- is bonded in a 2-coordinate geometry to one N4+ and one Cl1- atom. The S–Cl bond length is 2.10 Å. There are six inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Mo6+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one S2- atom. In the third Cl1- site, Cl1- is bonded in a 1-coordinate geometry to one Mo6+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Mo6+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one Mo6+ atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one Mo6+ atom. In each NS2Cl2 cluster, N4+ is bonded in a bent 150 degrees geometry to two S2- atoms. There is one shorter (1.54 Å) and one longer (1.55 Å) N–S bond length. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted water-like geometry to one N4+ and one Cl1- atom. The S–Cl bond length is 2.02 Å. In the second S2- site, S2- is bonded in a distorted water-like geometry to one N4+ and one Cl1- atom. The S–Cl bond length is 2.03 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one S2- atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one S2- atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MoS3 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2019

Materials Data on MoS3 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MoS3 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗
DOE OSTI2016

Amorphous MoS 3 Infiltrated with Carbon Nanotubes as an Advanced Anode Material of Sodium-Ion Batteries with Large Gravimetric, Areal, and Volumetric Capacities

The search for earth-abundant and high-performance electrode materials for sodium-ion batteries represents an important challenge to current battery research. 2D transition metal dichalcogenides, particularly MoS2, have attracted increasing attention recently, but few of them so far have been able to meet expectations. In this study, it is demonstrated that another phase of molybdenum sulfide—amorphous chain-like MoS3—can be a better choice as the anode material of sodium-ion batteries. Highly compact MoS3 particles infiltrated with carbon nanotubes are prepared via the facile acid precipitation method in ethylene glycol. Compared to crystalline MoS2, the resultant amorphous MoS3 not only exhibits impressive gravimetric performance—featuring excellent specific capacity (≈615 mA h g-1), rate capability (235 mA h g-1 at 20 A g-1), and cycling stability but also shows exceptional volumetric capacity of ≈1000 mA h cm-3 and an areal capacity of >6.0 mA h cm-2 at very high areal loadings of active materials (up to 12 mg cm-2). The experimental results are supported by density functional theory simulations showing that the 1D chains of MoS3 can facilitate the adsorption and diffusion of Na+ ions. At last, it is demonstrated that the MoS3 anode can be paired with an Na3V2(PO4)3 cathode to afford full cells with great capacity and cycling performance.

Ye, Hualin↗
DOE OSTI2014

Tuning magnetism of monolayer MoS{sub 2} by doping vacancy and applying strain

In view of important role of inducing and manipulating the magnetism in two-dimensional materials for the development of low-dimensional spintronic devices, the influences of strain on electronic structure and magnetic properties of commonly observed vacancies doped monolayer MoS{sub 2} are investigated using first-principles calculations. It is shown that unstrained V{sub S}, V{sub S2}, and V{sub MoS3} doped monolayer MoS{sub 2} systems are nonmagnetic, while the ground state of unstrained V{sub MoS6} doped system is magnetic and the magnetic moment is contributed mainly by six Mo atoms around V{sub MoS6}. In particular, tensile strain can induce magnetic moments in V{sub S}, V{sub S2}, and V{sub MoS3} doped monolayer MoS{sub 2} due to the breaking of Mo–Mo metallic bonds around the vacancies, while the magnetization induced by V{sub MoS6} can be effectively manipulated by equibiaxial strain due to the change of Mo–Mo metallic bonds around V{sub MoS6} under strains.

36 MATERIALS SCIENCE↗
DOE OSTI2017

Amorphous MoS 3 as the sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries

Significance We propose a concept of “sulfur-equivalent cathode materials,” and reason that instead of using problematic elemental sulfur, one can use sulfur-containing compounds as the alternatives with a comparable electrochemical property but free of any polysulfide generation. We demonstrate here the great potential of amorphous MoS 3 as such a sulfur-equivalent cathode material for room-temperature Li–S and Na–S batteries. More remarkably, we find that MoS 3 is fully cyclable in the carbonate electrolyte (which is known to kill conventional sulfur cathodes) under a relatively high temperature of 55 °C. MoS 3 can also be used as the cathode material of even more challenging Na–S batteries to enable an impressive performance.

25 ENERGY STORAGE↗