Preparation and characterization of LiCo0.5Ni0.45Ag0.05O2 cathode material for lithium–ion battery

Abstract

In this work, the layered compound of LiCo0.5Ni0.45Ag0.05O2, (LCNAO) was prepared by self-propagating combustion reaction for the cathode of lithium–ion battery. The as-synthesized material was subjected to thermo-gravimetric (TGA) analysis to determine the optimum range of annealing temperatures. Accordingly were annealed at 800, 900 and 1000 °C for 8 h in air and changes in the structural and morphological properties were studied. The structural properties of LCNAO powder were studied by means of X-ray diffraction (XRD), Field emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive Spectrometry (EDS), Atomic Force Microscopy (AFM) and a vibrating samples magnetometer (VSM). XRD analysis shows that all the powders are crystallized in the Phase structure R-3m and present a random orientation and surface morphology of the LCNAO powder consists of Nano-crystalline grains with uniform coverage of the substrate surface with randomly oriented. Hysteresis behavior analysis that the possessed soft magnetic properties. Thermo-gravimetric analysis show that the best annealing temperature and duration that leads to particles in the range 86–103 nm of the targeted composition are 900 °C for 8 h.