(Ni)MOF interpenetrated with MnO₂ nanothorns anchored on porous carbon cloth as self-standing cathode for high-performance supercapacitors

A composite of (Ni)MOF sheets penetrated by MnO2 nano-nanothorns anchored on porous carbon cloth has been fabricated by a two-step hydrothermal method and been explored as self-standing electrode for high-performance supercapacitors. The composite deliveres a high specific capacitance of 1780 mF cm^{- 2} at 4 mA cm^-2 (376 F g^-1 at 1 A g^-1 specific capacitance) and exhibits a capacitance retention of 93.4% at 15 mA cm^-2 after 5000 cycles. It reaches 71.6% of the original capacitance when the current density switches in between 4 and 15 mA cm^-2, indicating an excellent rate capability. These results open up new avenues for the development of high-performance electrode materials and the application of advanced energy storage devices.