What are the preparation methods of ternary lithium battery cathode materials?

The important preparation methods of ternary lithium battery cathode materials are roughly divided into solid phase method and solution method. The solid phase method includes high temperature solid phase method and acetate combustion method. The solution method mainly includes sol-gel method, co-precipitation method, spray pyrolysis method and so on. Different synthesis methods have a greater impact on the properties of the prepared ternary materials. Here is a brief analysis of several common preparation methods for readers: 1. Sol-gel method The sol-gel method is an advanced soft chemical method for the synthesis of ultrafine particles. It is widely used in the synthesis of various ceramic powders, coatings, films, fibers and other products. The method is to mix the precursors with lower viscosity uniformly to make a uniform sol, make it gel, shape it after gelation or during the gel process, dry, and then sinter or calcinate. 2. Co-precipitation method Co-precipitation method is generally to mix the chemical raw materials in a solution state, and add an appropriate precipitating agent to the solution, so that the mixed components in the solution are co-precipitated in a stoichiometric ratio, or in the solution An intermediate product is first reacted and precipitated, and then it is calcined and decomposed to prepare a fine powder product. It is difficult for traditional solid-phase synthesis technology to achieve molecular or atomic linearity stoichiometric mixing of materials, and co-precipitation methods can often solve this problem, so as to achieve the purpose of preparing high-quality materials at a lower processing cost. 3. High-temperature solid-phase method The high-temperature solid-phase method, that is, the reactants only undergo solid-phase reaction, is a commonly used method for the synthesis of powder materials, and it is also a relatively common method for preparing cathode materials. In order for the synthetic material to have ideal electrochemical performance and meet the stability of the Li+ deintercalation structure, it is necessary to ensure that it has good crystallinity. Therefore, the high-temperature solid-phase method, that is, only the solid-phase reaction of the reactants is used to synthesize powder materials, and it is also a common method for preparing cathode materials for lithium batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What conditions should the negative electrode material meet during application?