| abstract |
The invention discloses a preparation method and sodium storage application of a graphene-supported double transition metal sulfide composite material. The method comprises: using graphene, ammonium molybdate, cobalt nitrate, aluminum nitrate and sodium hydroxide as raw materials, preparing a graphene-supported intercalated cobalt-aluminum hydrotalcite precursor, hydrothermal vulcanization, roasting to improve crystallinity, and obtaining reduction Graphene oxide supported Co9S8 @ MoS2 ring nanocomposite. The composite material prepared by this method reduces the agglomeration phenomenon in the process of repeated charging and discharging, and significantly improves the electrochemical performance. The graphene-supported double transition metal sulfide composite material prepared by the invention has high reversible specific capacity and excellent cycle stability as a negative electrode material of sodium ion battery, and has great application potential in the field of electrochemistry. |