▎ 摘　　要

NOVELTY - A composite electrode comprises molybdenum-tungsten sulfide nanotiles and graphene nanomaterials in the molar ratio of 1:2, as active substance. The molybdenum-tungsten sulfide nanotiles are layered structures. The composite electrode comprises 80-85 %mass molybdenum-tungsten sulfide nanotiles/graphene nanomaterials, 5-10 %mass acetylene black and 10 %mass polyvinylidene fluoride. USE - Composite electrode is used for electrochemical lithium storage. ADVANTAGE - The composite electrode has high electrochemical lithium storage capacity, and excellent cycle characteristics and rate characteristics. DETAILED DESCRIPTION - A composite electrode comprises molybdenum-tungsten sulfide (Mo0.5W0.5S2) nanotiles and graphene nanomaterials in the molar ratio of 1:2, as active substance. The molybdenum-tungsten sulfide nanotiles are layered structure. The composite electrode comprises 80-85 %mass molybdenum-tungsten sulfide nanotiles/graphene nanomaterials, 5-10 %mass acetylene black and 10 %mass polyvinylidene fluoride. An INDEPENDENT CLAIM is included for preparation of composite electrode, which involves dispersing graphene oxide in deionized water, adding Gemini surfactant, stirring the resultant product, adding L-cysteine, ammonium thiosulfate and tungsten ammonium thiosulfate in the molar ratio of 5:0.5:0.5, stirring the resultant product, providing the resultant product into hydrothermal reactor, adding deionized water, providing the reactor into an oven at 230 degrees C for 24 hours, cooling the resultant product to room temperature, centrifuging the resultant product, washing the resultant product using deionized water, drying to obtain molybdenum-tungsten sulfide nanotiles/graphene nanomaterials, mixing the resultant product with acetylene black, polyvinylidene fluoride and N-methylpyrrolidone solution, stirring the resultant product to obtain homogeneous slurry, then coating the slurry on a copper foil as current collector, drying the resultant product and rolling. The content of Gemini surfactant is 0.01-0.02 mol/L. The content of graphene oxide is 30-65 mmol/L.