Synthesizing A Hybrid Energy Storage Device Containing Polymer Polyaniline (PANI) Anchored MXene-CNT Nanostructures

Abstract

Next generation electronics need to be high performance, multifunctional, and environmentally friendly. This study is dedicated to the preparation and characterization of a new hybrid electrode material based on the assembly of a polyaniline (PANI) polymer on MXene-carbon nanotube (CNT) nano-structures for supercapacitor usage. In this hybrid system, the conductive MXene-CNT framework serves as a high surface area electron conduit, whilst the PANI coating contributes to the pseudocapacitive charge storage via Faradaic processes. The hybrid material was obtained by in-situ polymerization of aniline on MXene-CNT substrates while maintaining strong interfacial interactions. The uniform distribution of PANI on the MXene-CNT matrix, followed by larger specific capacitance, rate capability, and cycling stability compared with the components demonstrated by electrochemical measurements further confirmed its effectiveness. The properties of synthesized material were characterized using Raman spectroscopy and X-ray diffraction (XRD), electrochemical measurements CV, and GCD. The redox peaks in CV show its hybrid nature so prepared electrode from MXene, CNT and PANI. The native synergy of MXene conductivity, CNT mechanical strength, and PANI redox activity resulted in a high-performance energy storage device with possibilities for flexible and wearable electronics possibilities. Therefore, this work proposes a new and effective approach for enhancing the development of advanced hybrid electrodes. In addition, the assembled heterostructure can assemble the plate-like 2D MXene, 1D CNTs, and 3D PANI to form a hybrid electrode with a hierarchical structure and complementary charge storage mechanisms. This dimensional synergy enabled high energy and power density. Therefore, this study provides a promising and efficient way for the preparation of ideal electrode materials for high-performance energy storage devices.