1 research outputs found
Nanostructured Electrode Materials Derived from Metal–Organic Framework Xerogels for High-Energy-Density Asymmetric Supercapacitor
This work successfully demonstrates
metal–organic framework (MOF) derived strategy to prepare nanoporous
carbon (NPC) with or without Fe<sub>3</sub>O<sub>4</sub>/Fe nanoparticles
by the optimization of calcination temperature as highly active electrode
materials for asymmetric supercapacitors (ASC). The nanostructured
Fe<sub>3</sub>O<sub>4</sub>/Fe/C hybrid shows high specific capacitance
of 600 F/g at a current density of 1 A/g and excellent capacitance
retention up to 500 F/g at 8 A/g. Furthermore, hierarchically NPC
with high surface area also obtained from MOF gels displays excellent
electrochemical performance of 272 F/g at 2 mV/s. Considering practical
applications, aqueous ASC (aASC) was also assembled, which shows high
energy density of 17.496 Wh/kg at the power density of 388.8 W/kg.
The high energy density and excellent capacity retention of the developed
materials show great promise for the practical utilization of these
energy storage devices