Synthesis and characterization of MXene/BiCr2O4 nanocomposite with excellent electrochemical properties

In the present work, the nanoparticles of spinel bismuth Chromites (BiCr2O4) are prepared using sol gel method. We have developed a novel technique to achieve longer stability and higher ionic storage of MXene/BiCr2O4 nanocomposite by using co-precipitation method. Structural and morphological properties of the prepared nano-structures are thoroughly investigated. The band gap is seen to reduce from 2.08 eV for MXene to 1.90eV for MXene/BiCr2O4 nanocomposite which encompasses all the earlier stated values. The average particle size of nanocomposite MXene/BiCr2O4 is 11.15 nm. The EDX analysis is performed to confirm the elemental composition of the prepared nano-composites. Composite electrodes are then electro-polymerized on the coating of glassy carbon electrode. The value of specific capacitance is measured to be 455.0 F/g, suggesting the plausible usage of the synthesized material in super capacitance applications. The prepared MXene/BiCr2O4 nanocomposites can be used as efficient promoters and electrode materials, based on the attractive properties like reduced band gap, high electrochemical stability, and excellent value of specific capacitance. (C) 2021 The Author(s). Published by Elsevier B.V.