Battery electrode plate easy to disassemble and disassembling method thereof

Abstract

The invention provides a battery electrode plate easy to disassemble and a disassembling method thereof. According to the battery electrode plate easy to disassemble, the tin plating layer is arranged between the current collector and the electrode active material, and the current collector and the electrode active material are quickly separated by utilizing the characteristic that metallic white tin can be quickly converted into flocculent or powdery grey tin at low temperature. A layer of conductive agent can be printed on the surface of the tin-plated layer through intaglio printing, so that on one hand, the problem of resistance increase caused by oxidation of the tin-plated layer can be prevented; and on the other hand, the conductive agent can be embedded into the tin-plated layer with a smooth surface through intaglio printing, so that the adhesion degree of the electrode active material and the current collector is improved, and the electrical property and the use safety of the battery are further improved. According to the method, the steps of separating and recycling the electrode active material are remarkably simplified, and the method has important significance on preparation and recycling of the electrode plate.

Description

technical field [0001] The invention relates to the technical field of battery devices, in particular to an easily detachable battery electrode sheet and a detachment method thereof. Background technique [0002] A large number of lithium-ion batteries face retirement every year. Lithium-ion batteries contain elements such as nickel, cobalt, manganese, phosphorus, and lithium. If decommissioned lithium-ion batteries cannot be properly recycled, they will easily pollute the environment. On the other hand, the recovery of metal resources can also reduce my country's dependence on resource imports. The current recycling processes for lithium-ion batteries are mainly fire and wet processes, both of which require a large amount of energy consumption and cause a certain burden on the environment. [0003] Lithium-ion battery anode material repair is a new process, which has the characteristics of less pollution, low energy consumption, and simple process flow. However, for the ...

AI Technical Summary

Problems solved by technology

The currently used stripping methods use organic solvents or mechanical vibration stripping, etc., but these two methods are inefficient, and the aluminum foil is easily broken into pieces and mixed into the stripped positive electrode material, which will affect the performance of the positive electrode material after repair.

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