Anhydrous lithium hydroxide is an important inorganic compound

Anhydrous lithium hydroxide (CAS: 1310-65-2) is an important inorganic compound, widely used in ceramics, glass, lithium batteries and other fields. In this paper, its chemical properties, preparation methods, application fields and future development trends are discussed in detail.
First, chemical properties
Anhydrous lithium hydroxide is a white crystalline powder that is strongly alkaline and easily soluble in water, but insoluble in ethanol and ether. Its chemical formula is LiOH and its molecular weight is 23.95. In the air, anhydrous lithium hydroxide easily absorbs carbon dioxide and water, forming lithium carbonate and water. Therefore, in the process of storage and use, sealing measures need to be taken to prevent its moisture absorption and deterioration.
2. Preparation method
There are two main preparation methods for anhydrous lithium hydroxide: melting method and precipitation method.
1. Melting method: lithium carbonate and lithium hydroxide are mixed in a certain proportion, melted at high temperature and hydrogen is injected into the reaction to produce anhydrous lithium hydroxide. The anhydrous lithium hydroxide prepared by this method has high purity, but large energy consumption and high equipment investment.
2. Precipitation method: Using lithium carbonate and barium hydroxide as raw materials, barium hydroxide and lithium carbonate are precipitated by chemical reaction, and then the precipitate is separated, washed and dried to obtain anhydrous lithium hydroxide. The anhydrous lithium hydroxide prepared by this method has high purity and low energy consumption, but the waste liquid and waste residue generated in the preparation process need to be properly disposed of.
3. Application fields
Anhydrous lithium hydroxide has a wide range of applications in many fields, mainly including the following aspects:
1. Ceramic industry: anhydrous lithium hydroxide can be used as a flux for ceramic glaze and color, improve the melting point of glaze and reduce the firing temperature of glaze, thereby improving the quality and output of ceramic products.
2. Glass industry: anhydrous lithium hydroxide can be used to manufacture special glasses with high refractive index and low dispersion, such as optical glass, laser glass, etc. In addition, it can also be used to manufacture glass products such as glass fibers and glass beads.
3. Lithium battery industry: anhydrous lithium hydroxide is one of the important raw materials of lithium battery cathode materials, and its purity has an important impact on the performance of lithium batteries. With the rapid development of new energy vehicles and other industries, anhydrous lithium hydroxide is more and more widely used in the lithium battery industry.
4. Other fields: anhydrous lithium hydroxide can also be used to prepare lithium metal, lithium hydride and other compounds, and as an alkaline catalyst, desiccant, etc.
Fourth, future development trend
With the progress of science and technology and the development of industry, the application field of anhydrous lithium hydroxide will be further expanded, and the market demand will continue to grow. In the future, the preparation technology of anhydrous lithium hydroxide will continue to optimize and innovate, reduce production costs, and improve product quality and purity. At the same time, with the improvement of environmental awareness and the implementation of environmental protection policies, the production and use of anhydrous lithium hydroxide will pay more attention to environmental protection and sustainable development.
In the field of lithium battery industry, with the rapid development of new energy vehicles and other industries, the requirements for lithium battery performance are becoming higher and higher. Anhydrous lithium hydroxide is one of the important raw materials of the cathode material of lithium battery, its purity and performance have an important effect on the performance of lithium battery. Therefore, the future research and development of anhydrous lithium hydroxide will pay more attention to its application performance in lithium batteries and the improvement of environmental performance.
In addition, with the progress of science and technology and the continuous emergence of new materials, the application field of anhydrous lithium hydroxide will continue to expand. For example, the application of new ceramics, special glass and other fields will gradually increase, bringing new opportunities and challenges to the development of the anhydrous lithium hydroxide industry.

In summary, anhydrous lithium hydroxide, as an important inorganic compound, has a wide range of applications in ceramics, glass, lithium batteries and other fields. In the future, with the progress of science and technology and the development of industry, the preparation technology of anhydrous lithium hydroxide will continue to optimize and innovate, the application field will be further expanded, and the market demand will continue to grow.