Process for preparing nickel-cobalt-manganese-based electrode material from cobalt xanthate slag

Abstract

The invention discloses a process for preparing a cobalt nickel manganese oxide electrode material by using sulfonic acid cobalt residue. The process is characterized by comprising the following steps of: adding lithium nitrate, manganese nitrate and nickel nitrate into a cobaltous sulfate solution prepared from sulfonic acid cobalt generated during zinc smelting, adding a colloidal particle grown inhibitor, adding a linear high polymer material, and fully stirring to obtain a precursor sol; and carrying out concentration, dual-roller thread throwing and calcination to obtain the carbon-containing cobalt nickel manganese oxide electrode material. Industrial waste residue is used for preparing the high additional value electrode material, cost is low, product performance is high, and the process is simple and has high economic and environmental benefits.

Description

technical field [0001] The invention relates to a battery electrode manufacturing technology, in particular to a preparation method of a nickel oxide cobalt manganese series electrode material used for a lithium battery. Background technique [0002] Lithium-ion batteries (lithium batteries) use carbon materials instead of metal lithium as the negative electrode, which avoids the safety problems of using metal lithium. It is known as a new generation of green batteries. It has high capacity, good safety, good cycle performance, and no memory effect. and pollution-free etc. [0003] Cathode material is one of the key materials for manufacturing lithium-ion batteries, accounting for more than 25% of the battery cost, and its performance directly affects various performance indicators of the battery, occupying a core position in lithium batteries. At present, the anode materials for lithium batteries that have been industrialized mainly include lithium cobalt oxide, modified l...

AI Technical Summary

Problems solved by technology

However, cobalt is highly toxic, scarce resources, expensive, and its overcharge safety performance is poor

The shortcomings of spinel-type lithium manganese oxide have low specific capacity, and poor high-temperature cycle and storage performance have not been resolved.

[0005] Ternary materials also have their own shortcomings, the most important is that their high-rate performance is not very good, which is mainly related to the electronic conductivity of the material

The process is complicated, resulting in high cost of cobalt [Xiao Jin'e, Li Zhenggen, Li Yuetai. Recovery process and improvement of cobalt in zinc hydrometallurgy [J]. Hunan Metallurgy, 1993, (3): 13-16]

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