High Purity Nickel Disulfide NiS2 Powder CAS 12035-51-7, 99.99%

Description of Powder Nickel Disulfide (NiS2) ：

Nickel sulfide is an organic compound that is characterized by an equation of the form NiS. It is a black or brown-black crystalline powder, insoluble in water and dilute acids, but can be decomposed in concentrated acids or strong bases. Nickel sulfide is stable at room temperature and pressure, but it is easy to decompose into metal nickel and sulfur at high temperatures.

The crystal structure of nickel sulfide is a hexagonal crystal system with a layered structure. In the crystal, each nickel atom is coordinated with six sulfur atoms, and each sulfur atom is coordinated with six nickel atoms. This special crystal structure makes nickel sulfide have a high density and hardness but also has a certain toughness and chemical stability.

The electrochemical properties of nickel sulfide are also relatively stable. It can oxidize under acidic conditions, but the reaction is slow. Under alkaline conditions, nickel sulfide can be reduced to produce metal nickel and hydrogen sulfide gas. This reduction reaction is widely used in alkaline batteries because nickel sulfide can provide high energy density and long-life battery performance as a positive electrode material.

In addition, nickel sulfide also has good magnetic and optical properties. It is ferromagnetic at high temperatures and becomes paramagnetic at low temperatures. In addition, by adding certain elements or preparing into specific structures, nickel sulfide can also show different colors and photoelectric properties.

Application of Powder Nickel Disulfide (NiS2)：

Battery manufacturing: Nickel sulfide is widely used in battery manufacturing, mainly for the manufacture of nickel-cadmium batteries and alkaline batteries. As a positive active ingredient, Nickel sulfide has good electrochemical properties as well as chemical stability, thus enhancing the battery's energy density and the service life of batteries. These batteries are extensively used in electronic devices for consumers electric vehicles, consumer electronics, and energy storage systems.

Catalyst: Nickel sulfide can be used as a catalyst for hydrogenation reactions and electrochemical synthesis. In the hydrogenation reaction, nickel sulfide can promote the addition reaction between the organic substrate and hydrogen molecules to produce organic compounds. In addition, nickel sulfide can also be used as an electrochemical catalyst for fuel cells and water electrolysis to produce hydrogen and other fields.

Electronic and semiconductor materials: In the electronics and semiconductor industry, nickel sulfide can be used as a functional material to make resistors, capacitors, and semiconductor devices. In addition, nickel sulfide can also be used as a dopant to prepare other semiconductor materials to improve their electrical conductivity and other properties.

Colorant: Nickel sulfide has a beautiful blue color, so it can be used as a colorant in the production of pigments, coatings, and inks. These colorant products can be used to beautify a variety of surfaces, such as buildings, household items, and artworks.

Environmental protection: In the field of protecting the environment, nickel sulfide can be employed to treat sewage containing nickel and also to recover nickel-containing metallic nickel. At the same time, nickel sulfide can also form stable sulfide precipitation with other metal ions such as copper, zinc, etc., thereby reducing the concentration of heavy metal ions in wastewater.

Production Method of Powder Nickel Disulfide (NiS2)：

Direct synthesis method: nickel powder and sulfur powder are directly mixed and react at a certain temperature and pressure to produce nickel sulfide powder. This method has low manufacturing cost, simple operation, and is suitable for small-scale production. However, the direct synthesis method makes it difficult to accurately control the particle size and composition of the powder, and the product quality is not stable enough.

Electrolysis: Electrolysis is an effective method for preparing nickel sulfide powder. Nickel sulfide powder is produced by the reaction of copper and sulfur ions in an electrolytic cell. By adjusting the electrolyte concentration, current density, and other parameters, the production process can be optimized, and the product quality can be improved. The advantages of the electrolysis method are high production efficiency, stable product quality, and suitable for large-scale production. However, the electrolysis method requires the use of large electrolytic equipment, high requirements for water quality and raw material purity, and relatively high manufacturing costs.

Reduction method: The reaction of copper salt or copper oxide with a reducing agent (such as hydrogen, carbon monoxide, etc.) at high temperature to produce nickel sulfide powder. Commonly used copper salts are copper sulfate, copper nitrate, and so on. The reduction process for the preparation of nickel sulfide powder comes with advantages that include a simple process that is low-cost and suitable for production on a large scale. However, this method requires the use of reducing agents and has a certain impact on the environment.

Vapor deposition: Vapor deposition is a new technology for preparing nickel sulfide powder. The method is to react copper source gas and sulfur source gas at high temperatures to produce nickel sulfide powder. The preparation of nickel sulfide powder by vapor deposition has the advantages of fine particle size, high purity, and a simple preparation process. However, the vapor deposition method requires the use of a high-temperature furnace and precision control system, which requires high equipment and high manufacturing costs and is not suitable for large-scale production.

Store Nickel Disulfide NiS2 in Powder Form:

Nickel Disulfide NiS2 is affected by dampness, which will have an adverse effect on the powder's dispersion and use. Therefore, Nickel Disulfide NiS2 must be packed in vacuum and kept in a dry and cool room. Nickel Disulfide NS2 Powder must also not be exposed to stress.

Packaging & shipping of Nickel Disulfide (NiS2) Powder:
Nickel Disulfide (NiS2) Powder is available in a variety of packaging options.
Nickel Disulfide NS2 Powder packaging: vacuum packed, 100g,500g or 1kg/bag; 25kg/barrel.
Nickel Disulfide NS2 Powder Shipping: Could be shipped out via air, sea, or express, as quickly as possible after payment receipt.

Synthetic Chemical Technology Co. Ltd., is an established global chemical supplier and manufacturer, with over 12 years' experience in providing high-quality nanomaterials. These include boride powders, nitride particles, graphite particles, sulfide particles, 3D-printing powders, etc.
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