Molybdenum disulfide:  Physical, chemical, electrical properties and applications

Molybdenum disulfide, the chemical formula MoS2, is a common inorganic compound with many unique physical, chemical, and electrical properties that make it valuable for many applications.

Physical property

Molybdenum disulfide is a gray-black solid, belonging to the hexagonal system. Its molecular structure consists of two layers of S atoms and one layer of Mo atoms, similar to the structure of graphite. Due to this structure, molybdenum disulfide physically has the following properties:

1. Layered structure: Molybdenum disulfide has a layered structure, which makes it have a high hardness in the two-dimensional direction, and is widely used in various lubricants and friction and wear fields.

2. High thermal conductivity: Molybdenum disulfide has a very high thermal conductivity, which makes it stable at high temperatures and is used as a high temperature thermal conductivity material.

3. Good chemical stability: molybdenum disulfide shows good stability in high temperature and chemical corrosion environment, which makes it a kind of high temperature chemical catalyst with wide application.

Chemical property

Molybdenum disulfide has relatively stable chemical properties, and has high stability to oxidation, reduction, acid, alkali and other environments. It is heated to 600℃ in the air and still does not decompose. In chemical reactions, molybdenum disulfide usually acts as a catalyst or carrier, providing an active center to promote the chemical reaction.

Electrical property

Molybdenum disulfide has good electrical properties and is a semi-metallic material. Its band structure has a band gap, which makes it a potential application value in the semiconductor field. Molybdenum disulfide is also used as a heat sink and electrical contact material in electronic devices.


Due to the excellent properties of molybdenum disulfide, it is widely used in many fields:

1. Lubricants: Molybdenum disulfide is widely used in various machinery and bearing lubricants due to its layered structure and high temperature stability, which can greatly improve the efficiency and life of machinery.

2. Catalyst: Molybdenum disulfide is used as a catalyst or carrier in many chemical reactions, such as Fischer-Tropsch synthesis, alkylation reaction, etc. Its excellent chemical stability makes it widely used in the chemical industry.

3. High temperature thermal conductivity material: Due to the high thermal conductivity of molybdenum disulfide, it is used as a high temperature thermal conductivity material, such as thermal conductivity elements in high temperature reactors.

4. Electronic devices: The electrical properties of molybdenum disulfide make it used in electronic devices, such as semiconductor materials and heat sink materials.

Molybdenum disulfide is widely used in many fields because of its unique physical, chemical and electrical properties. With the development of science and technology, the application field of molybdenum disulfide will continue to expand, bringing more convenience and benefits to human production and life.

Post time: Sep-19-2023