▎ 摘　　要

NOVELTY - Preparation of antimony or carbon composite material involves: dispersing 3-8 layers of graphene oxide in ethanol solution, adding cetyltrimethylammonium bromide and deionized water, ultrasonically processing mixed solution for 30-60 minutes to make the solution evenly dispersed, adding antimony trichloride to ethanol solution, ultrasonically mixing, slowly dripping into graphene oxide suspension, stirring at room temperature for 2-4 hours, centrifuging the solution, and washing with ethanol and deionized water to remove unreacted antimony salt to obtain reduced graphene oxide/antimony trioxide complex, dispersing in deionized water, ultrasonically processing for 30 minutes, recording obtained dispersion as dispersion (A), dissolving 0.05-0.7 g glucose, 0.1-0.3 g ammonium citrate and 1-2 g thiourea in 30 ml deionized water, mixing with dispersion (A), hydrothermally heating, filtering to obtain a black product, heating in a tubular furnace, and heat-preserving. USE - Preparation of antimony or carbon composite material used for negative electrode of lithium-ion battery. ADVANTAGE - The method effectively inhibits the problems existing when metal antimony alone is used as negative electrode material for lithium-ion battery, and further improves the conductivity by the introduction of graphene oxide. DETAILED DESCRIPTION - Preparation of antimony or carbon composite material involves: dispersing 80-120 mg 3-8 layers of graphene oxide in 50-100 ml ethanol solution, adding 0.1-0.5 g cetyltrimethylammonium bromide and 1-3 ml deionized water, ultrasonically processing mixed solution for 30-60 minutes in an ultrasonic device to make the solution evenly dispersed, adding 8-15 mmol antimony trichloride to 20 ml ethanol solution, ultrasonically mixing, slowly dripping into graphene oxide suspension within 30 minutes, stirring at room temperature for 2-4 hours, centrifuging the solution, and washing with ethanol and deionized water to remove unreacted antimony salt to obtain reduced graphene oxide/antimony trioxide complex, dispersing in 10-30 ml deionized water, ultrasonically processing for 30 minutes, recording obtained dispersion as dispersion (A), dissolving 0.05-0.7 g glucose, 0.1-0.3 g ammonium citrate and 1-2 g thiourea in 30 ml deionized water, mixing with dispersion (A), hydrothermally heating at 180-200°C for 10-15 hours, filtering to obtain a black product, heating at a heating rate of 2-5°C/minute to 500-600°C in a tubular furnace, and heat-preserving for 1-3 hours.