▎ 摘　　要

NOVELTY - Preparing graphene-lithium titanate battery involves attaching a positive electrode tab to the first graphene film and plating an aluminum foil having a thickness of 0.9-1.1 micrometer to fix the positive electrode tab on the first graphene film to obtain graphene positive electrode sheet, attaching the negative electrode tab to the second graphene film and plating a copper foil having a thickness of 0.9-1.1 micrometer to fix the negative electrode tab on the second graphene film to obtain graphene negative electrode sheet, wrapping the graphene positive electrode sheet obtained with a lithium carbonate sheet having a thickness of 239-241 micrometer, and pressurizing the aluminum foil in the graphene positive electrode sheet to adhere to the surface of the lithium carbonate sheet to obtain a battery positive electrode sheet, wrapping the graphene negative electrode sheet obtained with a lithium titanate sheet having a thickness of 239-241 micrometer. USE - Method for preparing graphene-lithium titanate battery. ADVANTAGE - The method enables to prepare graphene-lithium titanate battery which has high power density. DETAILED DESCRIPTION - The copper foil in the graphene negative electrode sheet is pressurized to adhere to the surface of the lithium titanate sheet to obtain battery negative electrode sheet where the leak temperature is -50/oC or lower, soaking battery positive electrode sheet obtained battery negative electrode sheet obtained with an electrolytic solution, and the battery positive electrode sheet and the battery are made. The negative electrode sheets all absorb the electrolyte to a saturated state, pressing and baking the battery negative electrode sheet and the battery positive electrode sheet treated, so that the weight of the electrolyte contained in the battery negative electrode sheet is reduced to 15-20% of the weight of the electrolyte absorbed by the battery negative electrode sheetto so that the weight of the electrolyte contained in the positive electrode sheet of the battery is reduced to 15-20 wt.% electrolyte absorbed by the positive electrode sheet of the battery, forming the battery negative electrode sheet and the battery positive electrode sheet processed into a battery core by lamination or winding. The battery cell prepared is placed in the battery case, and the negative electrode tab of the battery negative electrode plate of the battery cell is welded to the battery case, and then the electrolyte is injected into the battery case and left for 24 hours to obtain semi-finished product of graphene-lithium titanate battery. The volume of the electrolyte injected into the battery case is 29-31% of the volume of the space remaining after the battery case is filled into the battery core, soldering the positive electrode tab of the battery cell in the graphene-lithium titanate battery semi-finished product obtained to the battery cap, and then mounting the battery cap to the opening of the battery case and in the battery cap and the battery case, and insulating spacer is provided to obtain final product.