Supercapacitive behavior of microporous carbon derived from zinc based metal-organic framework and furfuryl alcohol

摘要

Microporous carbon materials are obtained by carbonizing a mixture of Zn-BTC MOP (Zn-2 (BTC)(3) (BTC; 1, 3, 5-benzenetricarboxylic acid)] and polyfurfuryl alcohol (Zn-BTC MOF/PFA) at different carbonization temperatures. The obtained samples are characterized by PXRD, XPS, SEM, TEM, gas sorption and Raman spectroscopic analysis. The maximum BET surface area of 1455 m(2) g(-1) is recorded for the porous carbon obtained at 950 degrees C. The incorporation of furfuryl alcohol in the 3D channels of Zn-BTC MOP results in creation of three distinct pore-regions; ultra-micropores (0.45-0.9 nm), micropores (0.9-2 nm) and mesopores (2 -3.7 nm) exist with total pore volume of 2.03 cm(3) g(-1). The MPC-950 exhibits an enhanced specific capacitance of 471 F g(-1) at 2 mV s(-1) and 375 F g(-1) at 0.75 A g(-1) and retains ca. 96% of its initial capacitance over 3000 cycles. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.