Three-dimensional lithium battery preparation method based on direct writing forming 3D printing technology

Abstract

The invention discloses a three-dimensional lithium battery preparation method based on a direct writing forming 3D printing technology. The three-dimensional lithium battery preparation method comprises the following steps: step 1, designing an electrolyte block and introducing the electrolyte block into a direct writing forming machine; 2, preparing gel electrolyte ink, and supplying the gel electrolyte ink to a charging barrel of a direct writing forming machine; 3, extruding the electrolyte ink in the charging barrel under pressure; 4, controlling a printing head to move on a working platform by a program according to the current section data to form a section; 5, completing the front section, and lowering the working platform by a layered thickness; 6, repeating the third step to thefifth step, and completing the printing of the electrolyte block; 7, performing laser drilling on the electrolyte block to obtain an electrode reserved through hole; 8, preparing positive electrode ink and negative electrode ink, and respectively pouring the positive electrode ink and the negative electrode ink into the reserved through holes to obtain a battery prefabricated body; 9, removing moisture through vacuum freeze drying; 10, carrying out heat treatment on the battery prefabricated body to realize solidification of the electrode and the electrolyte block; and 11, packaging to complete the preparation of the three-dimensional lithium battery.

Description

technical field [0001] The invention belongs to the field of rapid prototyping, and in particular relates to a method for preparing a three-dimensional lithium battery based on direct-writing 3D printing technology. Background technique [0002] Lithium batteries have the advantages of high specific energy, no memory effect, low self-discharge rate and long cycle life, and are widely used in consumer electronics and portable devices. Today, researchers have done a lot of research on battery design, electrolyte and additives, and the preparation process of positive and negative electrode materials. With the rapid development of micro-electromechanical systems and electric vehicles, higher requirements are placed on the performance of lithium batteries. How to achieve both energy density and power density, that is, how to improve energy storage capacity and efficiency at the same time is an urgent need in this field. A big problem to solve. With the deepening of research, re...

AI Technical Summary

Problems solved by technology

Although important research progress has been made in these technologies, their high cost prevents large-scale and mass-scale manufacturing, so the industrialization is severely limited.

Images