Metal organic frame work inserted NiCo 2 O 4 for asymmetric supercapacitor applications

Porous metal-organic frameworks, or MOFs, hold great promise as elements for a wide range of functional materials with the potential to store and convert electrochemical energy with exceptional performance. For use in high-performance supercapacitors, this article introduces bimetallic oxide (NiCo ₂ O ₄ -MOF) electrode materials made from metal-organic frameworks (MOFs). The optimal Ni-MOF@NiCo ₂ O ₄ (NCO@MOF) electrode achieves a maximum specific capacity of 560 Fg ^− 1 at 1 Ag ^− 1 and an outstanding rate capability of 87% after 5000 cycles, significantly exceeding that of its separate components. The constructed asymmetric device (ASC) utilising NiCo2O4-MOF as the positive electrode and activated carbon as the negative electrode demonstrated an exceptional energy density of 30.6 Wh kg ^− 1 at a power density of 480 W kg ^− 1 , with 84% capacitance retention after 10,000 cycles. This paper presents a novel method for the synthesis and fabrication of metal oxides originating from MOFs, recognised for their elevated porosity, advantageous for electrochemical energy storage applications.