Description

Tungsten Selenide is an inorganic compound belonging to the transition metal dichalcogenide (TMDC) family. This material is valued for its unique layered structure and semiconducting properties, which are critical for advanced electronic and optoelectronic applications. It is primarily sought by researchers and manufacturers in the fields of nanotechnology, solid-state lubrication, and renewable energy technology.

Application

• Solid-State Lubricants: Used as a dry lubricant additive in high-temperature and vacuum environments due to its low shear strength between layers.
• Nanoelectronics & Optoelectronics: Serves as a foundational material for two-dimensional (2D) semiconductors in transistors, photodetectors, and flexible electronics.
• Photocatalysis: Investigated as a catalyst for water splitting and environmental remediation under visible light irradiation.
• Energy Storage: Explored as an electrode material for lithium-ion and sodium-ion batteries to enhance capacity and cycling stability.
• Thermoelectric Materials: Studied for potential use in converting waste heat into electrical energy.
• Chemical Sensing: Utilized in the development of sensitive gas sensors due to its high surface-to-volume ratio and tunable electronic properties.

Basic Information

Product Name	Tungsten Selenide
CAS No.	12067-46-8
Molecular Formula	WSe2
Molecular Weight	341.77 g/mol
Synonyms	Tungsten(IV) Selenide; Tungsten Diselenide; Tungsten Selenide (WSe2); Ditungsten Triselenide; EINECS 235-107-5; WS2 (commonly associated but distinct); Tungsten Selenide powder
EINECS	235-107-5

Quality Control

Our Tungsten Selenide is produced and tested under controlled conditions to ensure batch-to-batch consistency and high purity. We employ advanced analytical techniques, including X-ray diffraction (XRD) for phase identification and spectroscopic methods for elemental analysis. A Certificate of Analysis (COA) detailing purity, particle size, and other critical parameters is provided with each shipment to meet rigorous research and industrial standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is moisture-sensitive (hygroscopic) and should be handled under an inert atmosphere such as argon or nitrogen for long-term storage to prevent oxidation.

Specification

Item	Specification
Appearance	Gray to black powder
Identification (XRD)	Complies with WSe2 phase
Purity (WSe2)	≥ 99.9%
Particle Size (D50)	< 10 µm (other sizes available)
Oxygen Content	< 1.0%
Trace Metals (ICP)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.