Sm-MOF/rGO/PANI composite as an electrode material for supercapacitor applications

Abstract

In recent years, scientists have been paying a lot of attention to metal-organic frameworks, often known as MOFs, as a possible material for use as electrodes in supercapacitors. MOFs are capable of functioning as high-quality pseudocapacitors because of their crystalline structure, which enhances the specific surface area and provide mechanical support for composite materials. The objective of this study is to synthesize an electrode material that can be used as supercapacitors by synthesizing Sm-MOF and then combining it with reduced graphene oxide (rGO) and polyaniline (PANI) to make a hybrid material. Here, the effect of incorporation of PANI and rGO in Sm-MOF is investigated, and its application as a supercapacitor is examined. Due to the high surface area and pore size, Sm-MOF/rGO/PANI material exhibits high specific capacitance. The computed specific capacitance of the composite Sm-MOF/rGO/PANI material is 1935.6 F g−1 when subjected to a current density of 1 A g−1. The Sm-MOF/rGO/PANI device is fabricated and exhibits a specific capacitance of 218 F g−1. The specific power and energy are calculated to be 59.3 Wh kg−1 and 581 W kg−1, respectively.