Electrochimica Acta, Vol.270, 183-191, 2018
Electrostatic assembly of graphene oxide with Zinc-Glutamate metal-organic framework crystalline to synthesis nanoporous carbon with enhanced capacitive performance
We demonstrated a protocol of incorporating the graphene oxide sheets on the surface of Zinc-Glutamate metal-organic framework (MOF) microcrystalline by electrostatic attraction and carbonizing this composite to synthesis the nanoporous carbon. The etching of facets in Zinc-Glutamate MOF microcrystalline by the graphene oxide sheets was observed and the possible mechanism of this etching had been elucidated. Excitingly, the Supercapacitor electrodes from this hierarchically porous carbon exhibit fast frequency response and ultrahigh charge/discharge rate up to 2 V/s, high specific gravimetric and volumetric capacitances of 318 F/g and 299 F/cm(3) at the scan rate of 20mV/s, outstanding cycling stability of 90% capacitance retention after 5000 cycles at the currency of 5 A/g in aqueous alkaline electrolytes. (c) 2018 Elsevier Ltd. All rights reserved.