▎ 摘　　要

NOVELTY - A graphene oxide is dispersed in deionized water, cationic surfactant is added and stirred, to obtain mixed system. L-cysteine and sodium hydroxide are added into obtained system and dissolved, to obtain dispersion system. Solid product is heat-treated in nitrogen/hydrogen mixed gas atmosphere, to obtain graphite molybdenum sulfide composite nano material. Obtained nano material is prepared, diacetylene black, polyvinylidene fluoride and N-methylpyrrolidone solution are mixed into paste, dried and rolled, to obtain graphene molybdenum sulfide/graphene composite electrode. USE - Preparation of graphene molybdenum sulfide/graphene composite electrode used for lithium ion battery. ADVANTAGE - The molybdenum sulfide/graphene oxide composite electrode is efficiently prepared with high capacity, and excellent cyclic characteristics, and charging/discharging characteristics, by simple method. DETAILED DESCRIPTION - A graphene oxide is ultrasonically dispersed in deionized water, cationic surfactant is added and fully stirred, to obtain mixed system. L-cysteine and sodium hydroxide are added into the obtained mixed system, continuously stirred and L-cysteine and sodium hydroxide are completely dissolved in the mass ratio of 1:5, to obtain dispersion system. The obtained dispersion system is transferred to the hydrothermal reaction kettle, and deionized water is added to adjust the hydro-thermal reaction kettle to 80 volume%. The reactor is provided in the constant temperature oven, hydrothermally reacted at 220-250 degrees C for 24 hours, naturally cooled to the room temperature, solid product is separated and collected, and fully washed with deionized water at 100 degrees C under vacuum-dried. The obtained solid product is heat-treated at 800 degrees C for 2 hours in the nitrogen/hydrogen mixed gas atmosphere, to obtain graphite-like molybdenum sulfide composite nano material. The obtained nano material is prepared as electrode active material, 5-10 weight% diacetylene black, 10 weight% polyvinylidene fluoride, and N-methylpyrrolidone solution are adequately mixed into a uniform paste, paste is uniformly coated to the copper foil current collector, dried and rolled, to obtain graphene molybdenum sulfide/graphene composite electrode. The mass ratio of sodium hydroxide and graphene oxide is 1: 1-1:1-1:4. The concentration of cationic surfactant is 0.01-0.03 M. The content of graphene oxide is 31.25-62.5 mmol/L. The volume ratio of the mixed gas of hydrogen is 10%.