▎ 摘　　要

NOVELTY - Preparing 3D printing battery electrode comprises (i) designing the printing model according to the size of the device, and introducing the printing model into the 3 D printer, setting the printing parameter, (ii) adding the printing slurry into the 3 D printer for printing to obtain battery electrode, where the printing slurry is mainly prepared from electrode active material, conductive agent, binder and photopolymerization agent prepared in proportion, (iii) adding battery electrode obtained in step (ii) under an ultraviolet lamp for photocuring reaction for 10-40 minutes, and drying at room temperature, (iv) adding battery electrode obtained in step (iii) into hydrothermal reactor to carry out hydrothermal reaction in hydrothermal medium i.e. graphene oxide solution (v) drying the battery electrode obtained in step (iv) and performing vacuum sintering at 420-600℃ for 1-3 hours and (vi) drying the battery electrode obtained in step (v) to obtain final product. USE - The method is useful for preparing 3D printing battery electrode. ADVANTAGE - The method: solves problem by preventing rupture of the SEI film and inhibiting growth of lithium dendrites compared to existing battery electrodes in market. DETAILED DESCRIPTION - Preparing 3D printing battery electrode comprises (i) designing the printing model according to the size of the device, and introducing the printing model into the 3 D printer, setting the printing parameter, (ii) adding the printing slurry into the 3 D printer for printing to obtain battery electrode, where the printing slurry is mainly prepared from electrode active material, conductive agent, binder and photopolymerization agent prepared in proportion, (iii) adding battery electrode obtained in step (ii) under an ultraviolet lamp for photocuring reaction for 10-40 minutes, and drying at room temperature for 2-4 hours, (iv) adding battery electrode obtained in step (iii) into hydrothermal reactor to carry out hydrothermal reaction in hydrothermal medium i.e. graphene oxide solution (with a concentration of 0.01-2 mg/ml) at 120-240℃ for 2-6 hours, (v) drying the battery electrode obtained in step (iv) and performing vacuum sintering at 420-600℃ for 1-3 hours and (vi) drying the battery electrode obtained in step (v) to obtain final product.