Electrochemical performance study of polyaniline wrapped LiAlGdMn 2 O 4 as a cathode material

The study investigates the effects of gadolinium and aluminium on LiMn₂O₄ nanocomposite, followed by synthesizing polyaniline and examining its effect on the LiAlGdMn₂O₄ nanocomposite. We studied the Fourier Transform Infrared Spectroscopy to analyse internal bending and stretching, while X-ray Diffraction was used to study the structural properties. Additionally, the prepared sample's morphology and particle size were examined using Field Emission Scanning Electron Microscopy. The crystalline composition of the samples was found to remain unchanged even after adding gadolinium, aluminium, or polyaniline. To Investigate the electrochemical performance, we studied the cyclic voltammetry, galvanostatic charge/discharge, and impedance analysis of the prepared materials. The electrochemical performance test of LiMn₂O₄, LiAlGdMn₂O₄, and LiAlGdMn₂O₄/PANI nanocomposites showed specific capacities of 99.16 mAh/g, 106.96 mAh/g, and 128.07 mAh/g, respectively. After 100 cycles, the nanocomposite retained 66.92% of its initial capacity, 88.87%, and 92.12% of its initial capacity. The synergistic interactions between the components contributed to the system's stability. The nanocomposite's improved electrochemical performance and stability were attributed to its increased active surface area and enhanced intrinsic conductivity and electronic structure.