▎ 摘　　要

NOVELTY - Printing three-dimensional negative electrode involves adding 11-13 pts. wt. thickener for every 100 pts. wt. negative electrode slurry, and configuring printing negative electrode slurry, according to the three-dimensional negative electrode as a three-dimensional network structure, modeling with three-dimensional software, carrying out three-dimensional printing to prepare printed prefabricated negative electrodes, reversing the prefabricated negative electrode, removing the solvent in the prefabricated negative electrode, and vacuum drying, and continuing to 3D print insulating polymers on three-dimensional network structure of the prefabricated negative electrode to prepare the three-dimensional negative electrode. USE - Method for printing three-dimensional negative electrode. ADVANTAGE - The method is simple, accurate and controllable. The prepared electrode material has good conductivity and large specific surface area. The three-dimensional porous end-capped cathode can effectively change the secondary battery dendritic crystal growth direction to improve the safety performance of the battery. The porous structure of the 3D printing cathode improves the diffusion speed of the ion, and at the same time, the battery has high ion and electronic conductivity.