Cobalt carbonate, cobaltosic oxide, positive electrode material and preparation method

The invention provides cobalt carbonate, cobaltosic oxide, a positive electrode material and a preparation method, and relates to the technical field of new energy, the pore volume of the cobalt carbonate provided by the invention is 0.01-0.10 cm < 3 >/g, the cobalt carbonate is rich in micropores and uniform in pore distribution, the cobalt carbonate is rapidly and uniformly shrunk in the sintering process, and the service life of the cobalt carbonate is prolonged. The prepared cobaltosic oxide is high in compactness and uniform in element distribution and pore distribution, the pore volume is 0.0010-0.0090 cm < 3 >/g, and through distribution of a large number of micropores and mesopores, the material activity is improved, and the discharge capacity and the cycle performance of the battery are improved. 本申请提供一种碳酸钴、四氧化三钴、正极材料及制备方法，涉及新能源技术领域，本申请提供的碳酸钴的孔容为0.01～0.10cm3/g，具有丰富微孔，同时孔隙分布均匀，碳酸钴在烧结过程中迅速均匀收缩，制备得到的四氧化三钴致密性高、元素分布均匀、孔隙分布均匀，孔容为0.0010～0.0090cm3/g，通过大量的微孔和介孔分布，提高了材料活性，提高电池的放电容量和循环性能。