▎ 摘　　要

NOVELTY - Preparing iron phosphide nano cube modified graphene/carbon nanotube composite aerogel material comprises (i) dispersing graphene powder, acidified carbon nanotubes and Prussian blue in water to form dispersion, freeze-drying the dispersion with liquid nitrogen to obtain porous Prussian blue/graphene/carbon nanotube composite aerogel material, where the mass ratio of the graphene powder to the acidified carbon nanotube is 1:1-9:1, the mass of the Prussian blue is 5-20 wt.% of the total mass of graphene powder and acidified carbon nanotube; and (ii) reducing Prussian blue in the composite aerogel material with phosphine gas. USE - The method is useful for preparing iron phosphide nano cube modified graphene/carbon nanotube composite aerogel material. ADVANTAGE - The method reduces lithium-sulfur battery shuttle effect, improves the lithium- sulfur battery cycle stability and active material utilization rate, and improves the surface capacity of lithium-sulfur battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) iron phosphide nano cube modified graphene/carbon nanotube is prepared by above mentioned method; and (2) lithium-sulfur battery, where the anode of lithium-sulfur battery is prepared by injecting lithium polysulfide from the iron phosphide nano cube modified graphene/carbon nanotube composite aerogel material.