Waste lithium-ion battery recycling technology

In recent years, the lithium-ion battery industry has been booming. With the advantages of high voltage, high energy density and good cycling performance, lithium-ion batteries have been widely used in mobile smart terminals, small electrical equipment, grid energy storage devices and electric vehicles. With the increasing demand for battery quality and quantity in downstream industries, especially in the power battery industry, lithium-ion batteries have become one of the current research hotspots, Lithium battery recyclingand the production has increased year by year. The wide range of applications has generated a large number of used lithium-ion batteries. It is estimated that between 2017 and 2030, more than 11 million tons of decommissioned lithium-ion batteries are expected to be generated globally.

Lithium-ion batteries use a large number of research metals such as lithium, nickel, cobalt, manganese, copper, iron, battery production lineand aluminum in the business. Discarded Lithium-ion batteries are rich in valuable metals. Among them, the cathode material is an important factor of the battery consisting of a part, which concentrates most of the metals to carry out the value of the resource. In addition, lithium-ion batteries contain fluorinated inorganic electrolytes and organic binders. If the recycling method is not used properly, it will affect China's environmental development and cause serious pollution. Therefore, the recycling and effective utilization of lithium-ion batteries has very important economic and environmental education significance. How to realize efficient, clean and cheap recycling of waste lithium-ion batteries has become an important energy, resources and environmental analysis of socialism facing one of the causes of the problem.

The recycling technology of waste lithium-ion batteries is roughly as follows: discharge treatment - disassembly treatment - separation of active substances on the aluminum foil. Among them, separating the active material on the aluminum foil is one of the key steps to achieve effective recycling of lithium-ion batteries. As the adhesion between graphite particles in the anode and the copper foil is low, the graphite in the waste lithium-ion battery can be easily recovered by mechanical treatment, so the utility model has the advantages of simple structure, convenient operation,labeling machine effective recovery of aluminum foil and copper foil, and recovery of the collector and the active substance separately.