▎ 摘　　要

NOVELTY - An electrode comprises graphene/molybdenum sulfide and amorphous carbon. The active substance of the electrode is a composite nanomaterial prepared using graphene nano-sheet/molybdenum graphene nano-sheet, amorphous carbon, acetylene black, and polyvinylidene fluoride. The content of composite nanomaterial active substance is 75-85 %mass, the content of acetylene black is 5-10 %mass, and the content of polyvinylidene fluoride is 10-15 %mass. The mass ratio of graphene nano-sheet and molybdenum disulfide graphene nano-sheet is 1:1-4:1. USE - Electrode is used in lithium ion batteries. ADVANTAGE - The electrode has high electrochemical lithium storage reversible capacity, cycle characteristics, and stable performance characteristics. DETAILED DESCRIPTION - An electrode comprises graphene/molybdenum sulfide and amorphous carbon. The active substance of the electrode is a composite nanomaterial prepared using graphene nano-sheet/molybdenum graphene nano-sheet and amorphous carbon, with the remainder being acetylene black and polyvinylidene fluoride. The content of composite nanomaterial active substance is 75-85 %mass, the content of acetylene black is 5-10 %mass, and the content of polyvinylidene fluoride is 10-15 %mass. In the composite nanomaterial, the content of graphene nano-sheet is 4.2-15 %mass, the content of molybdenum disulfide graphene nano-sheet is 44-65 %mass, and the remainder is amorphous carbon. The mass ratio of graphene nano-sheet and molybdenum disulfide graphene nano-sheet is 1:1-4:1. An INDEPENDENT CLAIM is included for preparation of electrode. A composite nanomaterial composed of graphene nano-sheet/molybdenum disulfide graphene nano-sheet and amorphous carbon, is obtained by, in an ice bath at 0 degrees C, dispersing graphite powder (0.015-0.06 g) in concentrated sulfuric acid (20-25 mL), stirring, adding potassium permanganate (3-4 times the mass of graphite), stirring for 30-60 minutes, adding deionized water (40-50 ml) when the temperature increases to 30-35 degrees C, stirring for 20-30 minutes, adding 30% hydrogen peroxide (10-20 ml), stirring for 5-10 minutes for centrifugal separation, washing the mixture using 5% hydrochloric acid solution, deionized water, and acetone to obtain an oxide graphite nano-sheet, dissolving molybdate in deionized water to form 0.02-0.07M solution, adding thioacetamide or thiourea as sulfur source and reducing agent (mass ratio of thioacetamide or thiourea and molybdate is 5:1-8:1), adding glucose (mass ratio of glucose and molybdate is 4.5:1-12:1), adding graphene nano-sheet to the solution for ultrasonic processing for 1-2 hours to fully disperse the graphene nano-sheet in the hydrothermal reaction solution (mass ratio of graphite and molybdate is 1:1-4:1), transferring the mixture to a hydrothermal reaction kettle with PTFE lining and sealing for reaction for 20-36 hours at 200-240 degrees C to obtain a product for centrifugal separation, washing the intermediate using deionized water and anhydrous ethanol, drying the product to obtain an intermediate product, and thermally treating the product for 2 hours in an atmosphere containing 90% nitrogen and 10% hydrogen at 800 degrees C. The composite and amorphous carbon are mixed as active substance with acetylene black and N-methylpyrrolidone solution of polyvinylidene fluoride with a mass concentration of 5% under stirring, to form a uniform paste. The paste is uniformly coated on a copper foil as current collector, vacuum-dried, and rolled to obtain the electrode.