Preparation method of complex-based supercapacitor material with ultrahigh specific capacity

The invention discloses a preparation method of a complex-based supercapacitor material with ultrahigh specific capacity, and relates to the technical field of supercapacitors, and the specific steps are as follows: S1, preparation of a precursor solution: adding H3TATB and uranyl metal salt into DMF, and obtaining a mixed solution through a mechanical stirring mode; then adding methanol and a formic acid solution, and continuously stirring for 30 minutes to obtain a mixed solution; a two-dimensional metal organic framework with a graphene-like structure is constructed through a planar pi-conjugated tricarboxylic acid organic ligand and uranyl ions, and the pi-pi interaction between layers can maintain the stability of the complex in water and acid-base conditions, and is beneficial to electron conduction to obtain a supercapacitor material with high specific capacity; the calculation result of the specific capacity of the material shows that the super capacitor material shows an ultrahigh specific capacity v