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

Abstract

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/BiCr2O4nanocomposite 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.

Keywords

• Nanoparticles
• Spinel bismuth chromites (BiCr2O4)
• Sol–gel method
• Coprecipitation method
• MXene/ BiCr2O4 nanocomposites
• Electrochemical analysis