▎ 摘　　要

NOVELTY - Preparing graphene oxide doped iron(II) sulfide nano material composition comprises (a) mixing analytically pure ferric ammonium oxalate, and urea, and grinding to obtain mixture A, (b) heat treating the mixture A in a low temperature tube furnace at a temperature increase rate of 2-20 degrees C/minute at 500-1200 degrees C for 1-5 hours, cooling and taking out to obtain product B, (c) taking graphene oxide and cetyl trimethylammonium bromide, then adding deionized water to obtain 1-3 mg/ml solution C, and ultrasonically dispersing the graphene oxide, (d) mixing product B with solution C, magnetically stirring, centrifuging, performing suction filtration, and freeze-drying to obtain product D, (e) mixing product D and sulfur source, and grinding to obtain mixture E, and (f) heat treating the mixture E in an argon and hydrogen atmosphere in a low-temperature tube furnace at a rate of 5-10 degrees C/minute at 300-600 degrees C for 30 minutes to 1 hour, and cooling. USE - The nano material is useful in sodium ion battery cathode material (claimed). ADVANTAGE - The method: has two step synthesis method; can increase the dispersion of the graphene sheets so that the graphene and carbon layer are uniformly combined by adding surfactant cetyl trimethylammonium bromide. The material: has good stability, and has high electrochemical sodium storage performance; and is not easy to collapse and break. DETAILED DESCRIPTION - Preparing graphene oxide doped iron(II) sulfide nano material composition comprises (a) mixing analytically pure ferric ammonium oxalate, and urea according to the mass ratio 1:1-7, and grinding to obtain mixture A, (b) heat treating the mixture A in a low temperature tube furnace at a temperature increase rate of 2-20 degrees C/minute at 500-1200 degrees C for 1-5 hours, cooling and taking out to obtain product B, (c) taking graphene oxide and cetyl trimethylammonium bromide in a mass ratio of 3:1, then adding deionized water to obtain 1-3 mg/ml solution C, and ultrasonically dispersing the graphene oxide, (d) mixing product B with solution C, magnetically stirring, centrifuging, performing suction filtration, and freeze-drying to obtain product D, (e) mixing product D and sulfur source in a mass ratio of 1:5-10, and grinding to obtain mixture E, and (f) heat treating the mixture E in an argon and hydrogen atmosphere in a low-temperature tube furnace at a rate of 5-10 degrees C/minute at 300-600 degrees C for 30 minutes to 1 hour, and cooling. An INDEPENDENT CLAIM is also included for graphene oxide doped iron(II) sulfide nano material composition prepared by the above method.