▎ 摘　　要

NOVELTY - Structure comprises electrode main body (1) and frame structure (2), where electrode main body is made of active material adhesive conductive additive and auxiliary printing material. The material of frame structure is electronic conductor or ion conductor. The material of bonding agent is aqueous or organic solvent. The material of electrode main body is wrapped outside The material of frame structure to form coaxial electrode lines by printing of three-dimensional (3D) printer, and arranged into a specific shape as positive electrode or negative electrode of battery. USE - Structure of battery electrode for lithium ion battery used in electronic product, electric vehicle and industrial energy storage field. ADVANTAGE - The battery electrode has stable structure, controllable thickness and porosity, high electrical conductivity, and uniform heat transfer, which promotes the improvement of battery performance. The framework in the electrode structure has good flexibility, electrical conductivity (electronic or ionic), and thermal conductivity for electron exchange between the electrode material and the current collector, and provids support for the electrode material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing battery electrode, which involves: (a) mixing and stirring water, active substances, adhesive, conductive additive and auxiliary printing material uniformly to prepare slurry for electrode main body, and introducing slurry into first injection pump of 3D printer, where active substances, adhesive and conductive additive are mixed in mass ratio of 5-9.5:0.25-1.5:0.25-1.5, mixing water, auxiliary printing material and adhesive in mass ratio of 40-85:12-49:1-3; (b) selecting frame structure material, introducing frame structure material into wire feeding stepping motor when the frame structure material is in solid wire shape, and introducing frame structure material into second injection pump when the frame structure material is in a liquid state; (c) manufacturing three-dimensional digital model of the electrode, and introducing three-dimensional digital model into 3D printer; (d) performing 3D printing by using 3D printer with a coaxial printing nozzle based on three-dimensional digital model, and printing electrode main body and frame structure, so that electrode wires of which outer electrode main body material wraps the inner frame structure material are formed and are arranged in a grid shape; and (e) drying the electrode for 2-3 hours by using air drying oven to remove the solvent, and drying for 12-24 hours by using vacuum drying oven to finally form positive electrode or negative electrode of the battery. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the battery electrode. Electrode main body (1) Frame structure (2)