High purity Molybdenum disulfide MoS2 powder for solid lubricant grease lubricant additives and friction improver

Molybdenum disulfide (MoS2) is a layered transition metal dichalcogenide with hexagonal crystal system Mainly used for solid lubricant grease lubricant additives friction improver Mo metallic compounds
 
 Specification of High purity Molybdenum disulfide (MoS2) CAS:1317-33-5

  
Description of High purity Molybdenum disulfide (MoS2) CAS:1317-33-5

Molybdenum disulfide (MoS2, CAS 1317-33-5) is a layered transition metal dichalcogenide (TMD) belonging to the hexagonal crystal system (2H polytype being the thermodynamically stable form). It exists as a black/grey solid with a density of 5.06 g/cm³ and a melting point of 2375 °C. Mainly used for producing solid lubricant grease, lubricant additives, friction improver and molybdenum metallic compounds, etc.

Applications of High purity Molybdenum disulfide (MoS2) CAS:1317-33-5

1. Nano-Additive Procurement for High-Performance Vegetable Oil-Based Lubricant Formulations

Based on the direct head-to-head four-ball tribometer evidence showing that MoS2 nano-additives deliver a 24.9% COF reduction and 12.3% WSD reduction—outperforming both hBN and graphite in palm kernel oil procurement of MoS2 nanopowder is indicated for formulators of bio-based industrial lubricants where maximum friction reduction is the primary performance metric. This scenario is particularly relevant for environmentally regulated sectors seeking to replace petroleum-based lubricants with vegetable oil-based alternatives without sacrificing tribological performance. The evidence also supports specification of MoS2 over graphite in Ni-based self-lubricating composites where lower and more stable friction coefficients are required .

2. Vacuum and Inert-Atmosphere Solid Lubrication for Aerospace and Precision Bearing Applications

MoS2 remains the industry-standard solid lubricant for vacuum environments (e.g., spacecraft mechanisms, satellite bearings) where its lamellar shear mechanism operates without oxidative degradation. The cold spray deposition study demonstrates that MoS2-based coatings achieve COF values as low as 0.03 ± 0.01 in dry nitrogen and vacuum at contact stresses up to 1386 MPa, with specific wear rates in the range of 3–7 × 10⁻⁶ mm³ N⁻¹ m⁻¹ . However, for applications exceeding ~350 °C in air, the thermal stability data indicate that WS2 (stable to ~425 °C) or graphite (stable to ~500 °C) should be selected instead . Procurement specifications should therefore explicitly state the operating atmosphere and temperature ceiling to guide MoS2 vs. WS2 selection.

3. Monolayer MoS2 Procurement for Low-Power Field-Effect Transistors and Optoelectronic Devices

For researchers and device manufacturers procuring 2D semiconductors for digital logic FETs, monolayer MoS2 is the TMD of choice where maximum on/off current ratio is the primary selection criterion. The literature benchmark of I_on/I_off = 8 × 10^8 for MoS2—substantially exceeding MoSe2 (1 × 10^6), WS2 (1 × 10^7), and WSe2 (1 × 10^7) —combined with a direct band gap of ~1.8–1.9 eV enabling efficient light emission and photodetection , makes monolayer MoS2 uniquely suited for ultra-low-standby-power logic and visible-range optoelectronics. Procurement should specify monolayer or bilayer thickness with >99% purity (commercially available via CVD on SiO₂/Si or sapphire substrates) to ensure the direct band gap property is realized. Where higher carrier mobility is paramount, WS2 (mobility up to 486 cm² V⁻¹ s⁻¹) may be preferred despite its lower on/off ratio.

4. MoS2 as an Anode Host Material for Sodium-Ion and Fast-Charging Lithium-Ion Batteries

The interlayer spacing of MoS2 (0.615 nm) is ~84% larger than that of graphite (0.335 nm), directly translating to superior Na⁺ intercalation kinetics and higher theoretical capacity for sodium-ion battery anodes . For research groups and battery manufacturers developing SIBs, procurement of MoS2 with controlled interlayer expansion (synthetically achievable up to 0.94 nm) is supported by evidence of enhanced rate capability . In applications where maximum interlayer spacing is the overriding criterion, MoTe2 (~0.70 nm intrinsic spacing) may be evaluated as an alternative, though MoS2 offers a more favorable balance of cost, availability, and structural tunability .

FAQ

Q1: What is your regular lead time for sample and official order?

A1: Sample lead time 5-7 days. Official order lead time 14-21 days.

Q2: What is your MOQ?

A2: MOQ usually is 1kg.

Q3: How you control product quality?

A3: From raw material inspection, dupro inspection to final product inspection are executed strictly.

Q4: What is your warranty policy?

A4: We will send you a new batch if there is any quality issue during warranty time

Q5: Do you refund if customer receive defective product and do not accept replacement?

A5: Yes