▎ 摘　　要

NOVELTY - Preparing dual-functional interlayer materials, involves (a) synthesizing blue deposits on fluorinated tin oxide, quartz and tungsten substrates are mainly the oxygen-deficient phase of tungsten oxide, preferably W18O49, and transforming anoxic W18O49 phase into oxidized tungsten oxide phase by heating in air, (b) synthesizing tungsten nitride nanoribbon arrays by nitriding tungsten oxide nanoribbon arrays on quartz or tungsten substrate in different reactor comprising a silicon carbide susceptor heated by radiation from a tungsten coil heater, and (c) dissolving the nanoribbons in graphene oxide solution, stirring for 12 hours, transferring the mixed solution to a PTFE lined autoclave, heating, washing several times with deionized water, freeze-drying, transferring to a quartz boat, and annealing at 850 degrees C for 6 hours in flowing ammonia gas to obtain graphene oxide doped tungsten nitride nanoribbon, where the interlayer material is graphene oxide doped tungsten nitride nanoribbon. USE - The method is useful for preparing dual-functional interlayer materials for lithium-sulfur battery. ADVANTAGE - The method has the function of blocking lithium polysulfide, and prevents the accumulation of lithium sulfide, effectively alleviates the problem of serious degradation of lithium-sulfur battery capacity, and improves the performance of lithium-sulfur battery.