| abstract |
The invention relates to the technical field of supercapacitor materials, in particular to a hollow core-shell structure supercapacitor material Fe-Co-S/NF and its preparation method and application. The method comprises: 1) cobalt source, organic ligand and solvent are formulated into a reaction solution, foamed nickel is immersed in the reaction solution to react to obtain Co-MOF/NF; 2) Co-MOF/NF is soaked in sulfuric acid In the ferrous aqueous solution, take out the Co‑MOF/NF after completion, and dry to obtain LDH@Co‑MOF/NF; (3) React the sulfur source, solvent and LDH@Co‑MOF/NF under sealed conditions. The reaction product is dried and obtained. In the present invention, cobalt-based MOF is grown on nickel foam and used as a template to in-situ synthesize an ultra-high-performance Fe-Co-S electrode material. This electrode material is used to construct a high-performance supercapacitor self-supporting electrode material, showing Super high mass ratio capacitance. |