I have delaminated the multi-layered MXene and using as a working electrode for measuring the specific capacitance. The electrolyte is 1M sulphuric acid. But Iam not getting good specific capacitance values (in F/g). How to improve the specific capacitance and cyclic stability?

Potential window: 0.3 V to -0.5 V

Using carbon black and PVDF binder with the active material (8:1:1)

Stainless steel substrate is used for coating