Electrochemically enhanced battery-type Ni substituted CaMo-MOF electrodes: Towards futuristic energy storage system

Abstract

Constructing a physiochemically proficient electrode for energy application is of pioneer in commercializing electronic devices. In that view, we engineered the nickel-incorporated calcium molybdate (NCMF) metal-organic framework (MOFs) with nanosheets in 3D floral morphology using the facile hydrothermal method. The floral structured NCMF0.5 MOFs when employed as the electrode in supercapacitor (SC) application exhibit impressive electrocatalytic performance. The advantage of a well-defined arrangement of petal-like sheets hierarchically, makes the KOH electrolyte access the inner area of the electrode resulting in a distinguished specific capacitance value of 822 F/g at 1 A/g current density. The fabricated NCMF0.5||AC asymmetric supercapacitor device (ASC) on account of the high specific surface area with more metal active sites contributes to achieving excellent energy and power density of 45 Wh/kg and 750 W/kg at the current density of 1 A/g. The stability and reproducibility of the constructed ASC device were 84 % and 99.4 %, respectively. Hereby, our findings clearly elucidate the substantial prospects attained by the synergistic effect in NCMF0.5 MOFs, which could be beneficial for developing sophisticated energy storage devices.