▎ 摘　　要

NOVELTY - A modified carbon nano-porous lithium titanate composite material preparing method involves preparing modified nano carbon lithium titanate material. Porous graphene is prepared. Composite electrode material is prepared by weighing the obtained modified nano carbon lithium titanate material, dispersing into deionized water and adding surface active agent, stirring to obtain a homogeneous dispersion, adding the prepared porous graphene to the dispersion, collecting the product, air drying, placing the dried product in a tube furnace under protective atmosphere, to obtain finished product. USE - Method for preparing modified carbon nano-porous lithium titanate composite material. ADVANTAGE - The method enables preparing composite material with high cycle stability and security, and high production efficiency, in simple and cost effective manner. DETAILED DESCRIPTION - A modified carbon nano-porous lithium titanate composite material involves preparing modified nano carbon lithium titanate material by placing lithium titanate nano material in the reaction zone of the reactor, heating under a protective atmosphere, at first temperature of 400-500 degrees C, stopping the heating temperature, the flow of hydrogen after the second heating to 600-1200 degrees C and at an elevated temperature while passing into a mixed gas of hydrogen and carbon source gas, to the end of the heat temperature for 0.1-5 hours, stopping heating, purging with nitrogen and cooling to obtain a modified carbon nano lithium titanate material. Porous graphene is prepared by adding 0.5-1.5 g/l GO solution and 65-70% nitric acid solution at a volume ratio of 1: 3-1:15, mixing, ultrasonic the mixed solution, adding deionized water, repeatedly centrifuging, cleaning, washing the system until the PH is 5-7, and lyophilized to give a porous solid with a graphene oxide of nanoholes. Composite electrode material is prepared by weighing the obtained modified nano carbon lithium titanate material, according to the concentration of 0.1-50 g/l, dispersing into deionized water and adding surface active agent, stirring for 5-120 minutes to obtain a homogeneous dispersion, adding the prepared porous graphene to the dispersion, performing ultrasonic dispersion, collecting the product by suction filtration, air drying naturally, placing the dried product in a tube furnace at heating under protective atmosphere, at 500-1000 degrees C after holding for 1-8 hours, to obtain finished product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a modified carbon nano-porous lithium titanate composite material.