Preparation method of all-solid-state thin film lithium ion battery

Abstract

The invention belongs to the technical field of preparation of lithium ion batteries and provides a preparation method of all-solid-state thin film lithium ions, which overcomes the problems of high equipment requirements, high cost and difficulty in mass production and application in the existing preparation process. According to the preparation method, a metal plate is selected as a positive electrode current collector plate and a negative electrode current collector plate of the battery; and the positive electrode material slurry, the solid electrolyte slurry and the negative electrode material slurry are sequentially atomized into small particles to be printed by adopting an atomizer, so as to form the all-solid-state thin film lithium ion battery laminated with the positive electrodecurrent collector plate, a positive electrode thin-film layer, a solid electrolyte thin-film layer, a negative electrode thin-film layer and a negative electrode current collector plate. The preparation method in the invention adopts an atomization printing technology, the preparation process is simple, and the preparation cost is low; at the same time, the composition of each layer material can be controlled by controlling the composition of the slurry, and the all-solid-state thin film lithium ion batteries in different shapes, sizes and thickness are generated through movement control of aprinting nozzle and mask design printing; and industrial production and application is facilitated.

Description

technical field [0001] The invention belongs to the technical field of lithium ion battery preparation, and in particular relates to a preparation method of all-solid thin film lithium ions. Background technique [0002] All-solid-state thin-film lithium-ion batteries are more stable and safer than liquid electrolyte lithium-ion batteries, so they have wider application prospects. At present, the preparation of all-solid-state thin-film lithium-ion batteries mostly adopts the method of physical vapor deposition (PVD), including magnetron sputtering and vacuum evaporation; the above-mentioned methods have high requirements for preparation equipment, high cost, and are difficult to produce and apply on a large scale. Moreover, the preparation process is all carried out in a vacuum, and it is difficult to prepare batteries with large changes in shape and size range. Contents of the invention [0003] The purpose of the present invention is to provide a method for preparing a...

AI Technical Summary

Problems solved by technology

At present, the preparation of all-solid-state thin-film lithium-ion batteries mostly adopts the method of physical vapor deposition (PVD), including magnetron sputtering and vacuum evaporation; the above-mentioned methods have high requirements for preparation equipment, high cost, and are difficult to produce and apply on a large scale. And the preparation process is carried out in a vacuum, it is difficult to prepare batteries with large changes in shape and size range

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