Antifriction properties of disulfides and diselenides with a lamellar structure

Kalikhman, V. L.; Gladchenko, E. P.; Duksina, A. G.; Pravoverova, L. L.

doi:10.1007/bf00794391

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…Early literature found no reaction when an 80% Co-20% MoS 2 mixture was heated to a temperature of 1073 K. 126 In later studies, upon e-beam evaporation, one monolayer of Co was metallic and did not form Co-S bonds until annealed to 790 K; similarly, when deposited via pulsed laser, the adatoms had sufficient energy to remove some S from the MoS 2 surface, but the Co remained metallic. 127,128 The liberation of some S was postulated to be due only to the bombardment of the substrate with energetic species, as had been seen in earlier studies of Ar-ion bombardment of MoS 2 .…”

Section: Group 9: Co Rh and Irmentioning

confidence: 98%

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Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Domask

Gurunathan

Mohney

2015

Journal of Elec Materi

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Molybdenum disulfide is a layered transition-metal dichalcogenide semiconductor that is attracting renewed attention for its potential use in future nanoscale electronics, optoelectronics, catalysis, tribology, and other fields. In all of these cases, the interaction between MoS 2 and various transition metals is very important. In this work we survey the thermodynamics of the metal-Mo-S systems and the anticipated reaction products from transition metals and MoS 2 . We examined over 200 references on the reactions between transitions metals (M) and MoS 2 , compiled thermodynamic data, and used the thermodynamic data to predict M-Mo-S ternary phase diagrams for systems without experimentally determined diagrams. Where possible, experimental literature on the interactions between metals and MoS 2 was used to corroborate our predicted diagrams and stable reaction products. Both the previously reported and newly predicted M-Mo-S phase diagrams fall into three categories. In the first category, the metal is in thermodynamic equilibrium with MoS 2 . In another, there is a driving force for the metal to reduce MoS 2 , with tie lines to sulfides of the contact metal dominating the phase diagram. In a final category, there is a very stable solid solution or ternary phase that dominates the phase diagram. Better understanding of the phase equilibria in the M-Mo-S systems will aid research on the use of MoS 2 in a variety of fields.

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Section: Group 9: Co Rh and Irmentioning

confidence: 98%

“…126 Work by Souder et al in 1971 used a radioactive tracer to show the diffusion of Ag into MoS 2 on annealing. At temperatures of 673 K to 873 K for 5 min, they reported that the Ag diffused into spaces between the MoS 2 layers but found no detectable diffusion in the lateral direction (parallel to the layers).…”

Section: Group 11: Cu Ag and Aumentioning

confidence: 99%

Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Domask

Gurunathan

Mohney

2015

Journal of Elec Materi

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Synergistically Improved Electronic and Thermal Transport Properties in Nb-Doped Nb_yMo_1–ySe_2–2xTe_2x Solid Solutions Due to Alloy Phonon Scattering and Increased Valley Degeneracy

Zhang

et al. 2019

ACS Appl. Mater. Interfaces

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The layered 2H-MoSe2-based compounds have recently attracted considerable attention as novel thermoelectric (TE) materials for medium-to-high temperature power generation. In this research, for the first time, dissolving Te in binary MoSe2 and thus forming MoSe2–2x Te2x solid solutions is shown to be very effective for reducing lattice thermal conductivity (κL) due to strong alloy scattering of phonons. Along the ⊥P direction, MoSe1.2Te0.8 achieves the lowest κL of 2.87 W m–1 K–1 at room temperature among all solid solutions, an 85% decrease from that of pristine MoSe2 (18.69 W m–1 K–1). Band structure calculations and experiments have verified that Te alloying effectively increases the density-of-states effective mass of MoSe2–2x Te2x solid solutions via increased valley degeneracy, leading to an enhanced Seebeck coefficient. Moreover, Nb doping modulates the density of holes of Nb y Mo1–y Se1.2Te0.8 samples to its optimum level and gives rise to the maximum power factor of 0.85 mW m–1 K–2 at 823 K. On account of synergistic optimization of the electronic and thermal transport, Nb0.05Mo0.95Se1.2Te0.8 has achieved the highest ZT value of 0.34 at 823 K, representing a 70% enhancement as compared to the best result previously reported for MoSe2. This research documents that alloying combined with doping is an effective avenue to greatly enhance the TE performance of Nb y Mo1–y Se2–2x Te2x solid solutions.

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Impurity states in Mo_1−xM_xSe₂ compounds doped with group VB elements and their electronic and thermal transport properties

Zhang

et al. 2020

J. Mater. Chem. C

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Antifriction properties of disulfides and diselenides with a lamellar structure

Cited by 4 publications

References 2 publications

Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Synergistically Improved Electronic and Thermal Transport Properties in Nb-Doped Nb_yMo_1–ySe_2–2xTe_2x Solid Solutions Due to Alloy Phonon Scattering and Increased Valley Degeneracy

Impurity states in Mo_1−xM_xSe₂ compounds doped with group VB elements and their electronic and thermal transport properties

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Antifriction properties of disulfides and diselenides with a lamellar structure

Cited by 4 publications

References 2 publications

Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Transition Metal–MoS2 Reactions: Review and Thermodynamic Predictions

Synergistically Improved Electronic and Thermal Transport Properties in Nb-Doped NbyMo1–ySe2–2xTe2x Solid Solutions Due to Alloy Phonon Scattering and Increased Valley Degeneracy

Impurity states in Mo1−xMxSe2 compounds doped with group VB elements and their electronic and thermal transport properties

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About

Synergistically Improved Electronic and Thermal Transport Properties in Nb-Doped Nb_yMo_1–ySe_2–2xTe_2x Solid Solutions Due to Alloy Phonon Scattering and Increased Valley Degeneracy

Impurity states in Mo_1−xM_xSe₂ compounds doped with group VB elements and their electronic and thermal transport properties