Cobalt oxide, chemical formula coo. Cobalt oxide is a stable oxide of cobalt. It is grayish green, brown, pink and dark gray due to different preparation methods and purity. The relative density was 6.45. Soluble in acid, insoluble in water, alcohol, ammonia. It is easily reduced to cobalt by carbon monoxide. At high temperature, it is easy to react with silica, alumina or zinc oxide to form a variety of pigments. Cobalt oxide has a good application in the industry, and has a wide range of uses. It is mainly used in the following five aspects. We can make reference.

(1) Paint additive
When cobalt oxide is added in the production of various paints, the performance of the paint is improved, especially in the role of drying agent in the paint, that is, it is easy to quickly dry the paint in order to improve the application rate. This is of great benefit to the rapid application of paint.

(2) Enamel and ceramic pigments
After adding oxidation drill into enamel material, it can resist corrosion and improve wear resistance. In all kinds of building materials and daily-use ceramics, the blue pigment or glaze made of cobalt oxide is applied to the ceramic products. After baking, the ceramic products are bright and more artistic.

(3) Refined CMS-client.loc/product-tcVvkj.html'>petroleum catalyst
Cobalt products have a long history as catalysts in petroleum refining, and play an important role in promoting the development of refining. For example, some alloy catalysts are made of cobalt, aluminum and iron, and cobalt oxide is also very important as petroleum catalyst, which is indispensable for accelerating petroleum refining. Therefore, in recent years, the use of cobalt oxide catalyst has become an important position.

(4) Battery industry
Cobalt compounds such as cobalt powder and cobaltous oxide powder can improve the proton conductivity of Ni (OH) 2, lower the oxidation potential and increase the oxygen evolution potential as well as improve the electrode performance. In the early stage of charging, the electrode can be charged and Ni (OH) 2 can be transformed into NiOOH. Meanwhile, the precipitation of oxygen can be restrained, the charging efficiency can be improved and the specific capacity of the electrode can be increased.

(5) Raw materials for other products
For example, hydrogen is used to reduce cobalt oxide at a certain temperature to produce cobalt powder, which is used to make cemented carbide; cobalt ingot is obtained by electrolysis from aqueous solution of cobalt oxide dissolved by acid, which is used as additive for high temperature and high strength alloy steel; cobalt salt, such as coc2, cos04, CoCO3 and coc204, can be produced from acidic cobalt oxide solution after different chemical processing. Therefore, pure cobalt oxide is widely used as intermediate material. In addition, the use of cobalt oxide in electrical industry, such as additive of phosphor and other chemical industry, is also developing rapidly. In general, the application fields of cobalt oxide will be expanded.