According to published research, manganese nickelate (MnNi2O4) porous nanosheets were made utilising a technique deriving from MOFs. The material was tested by measuring its capacitance, which was 2848 F g -1 at 1 A g -1 , and its high stability, which was 93% over the course of 5000 life cycles. MnNi2O4 that had already been produced was employed as the positive electrode whereas active carbon as the negative electrode. At a power density of 800 W kg -1 , the pair of electrodes displayed an energy density of 142.8 W h kg -1 . For electrochemical applications, MOFs [Mn(BDC).n DMF]n (Mn-MOFs)