Core-shell structure composite material composed of transition metal oxide grown on nickel foam in situ and metal organic skeleton

The invention relates to core-shell structure composite material composed of a transition metal oxide grown on nickel foam in situ and a metal organic skeleton. The preparation method of the core-shell structure composite material includes the steps: preparing a self-assembled flower-like CoO cluster of nanowire arrays grown on nickel foam, then preparing ZIF-67@CoO with a core-shell structure, grown on the nickel foam, and finally preparing Co/C-N@CoO with a core-shell structure, grown on the nickel foam. Compared with the prior art, the preparation method has high purity, good dispersibilityand controllability in the prepared products, is simple the process steps and is easy to operate. The prepared transition metal oxide and metal organic skeleton composite material with the core-shellstructure is grown on the nickel foam substrate, can be directly used as an electrode material of a supercapacitor, has excellent capacitance performance, and can be applied to high stability, wearable electronic devices and other occasions.