Preparation method and application of aluminum-doped large-particle cobalt carbonate

Abstract

The application belongs to the technical field of new energy batteries, and particularly relates to a preparation method of aluminum-doped large-particle cobalt carbonate and application thereof. The preparation method of aluminum-doped large-particle cobalt carbonate disclosed by the application first prepares cobalt carbonate seeds, then continues to react after being separated into a kettle, and finally obtains aluminum-doped large-particle cobalt carbonate. By strictly controlling the process and process conditions of seed preparation and subsequent co-precipitation reaction, the uniformity of aluminum doping in cobalt carbonate is greatly improved, the aluminum distribution in the obtained tricobalt tetraoxide after calcination is more uniform, and the electrical performance of lithium ion batteries can be effectively improved. The preparation method of aluminum-doped large-particle cobalt carbonate disclosed by the application strictly controls the seed preparation process and the subsequent reaction process, so that the surface of the prepared cobalt carbonate particles is smoother, there is no segregation, and the sphericity is better, which is beneficial to improving the quality and service life of the final lithium ion battery product.

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