Method for preparing MOF-based nano material based on waste lithium ion battery leachate

Abstract

The invention provides a method for preparing an MOF-based nano material based on a waste lithium ion battery leachate. The method comprises the following steps: (1) dissolving a waste lithium ion battery positive electrode material in an acidic reagent to obtain a leachate containing Co<2+> and Li<+>; (2) dispersing a certain amount of 2methylimidazole into the leachate, and centrifuging to obtain an MOF nano material; and (3) carrying out roasting treatment on the MOF nano material to obtain an MOF-based derivative nano material. According to the method provided by the invention, raw materials are cheap and easily available, the preparation steps are simple, reaction conditions are mild and easy to control, the prepared product is regular in morphology and high in purity, and the methodhas a wide application prospect, and has important significance for high-valued utilization of waste lithium ion batteries.

Description

technical field [0001] The invention relates to the field of resource recycling technology and preparation of chemical materials, in particular to the field of a method for preparing MOF-based nanomaterials based on the leaching solution of waste lithium-ion batteries. Background technique [0002] Lithium-ion batteries have the advantages of high energy density, small self-discharge, light pollution, and long cycle life. They are widely used in consumer electronics, new energy vehicles, and large-scale energy storage equipment, which leads to the consumption and disposal of lithium-ion batteries. The amount of lithium-ion batteries is increasing rapidly around the world, and after the service of lithium-ion batteries is over, its subsequent reasonable treatment is an urgent problem to be solved. Improper disposal of used lithium-ion batteries will result in a waste of resources and pose a greater threat to the environment and human health. Under such circumstances, the rec...

AI Technical Summary

Problems solved by technology

[0003] Due to the coexistence of various metal ions, it is difficult to separate and extract the leachate of waste lithium-ion batteries, and the process is long, the utilization rate of the leachate is low, the added value of the product is low, its purity cannot meet the requirements of commercial applications, and its shape is uncontrollable.

At present, MOF materials have shown good application prospects in lithium-ion batteries, supercapacitors, electrocatalysis, and adsorbents, but their large-scale application is limited due to the expensive raw materials required for their preparation.

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