Creating High Electrical Capacity through Synthesis Designing of Ternary Composite with Partial Mole Fraction Combination Containing xLiCrO2, yLiCoO2, and (1 – x – y) LiNi1/2Mn1/2O2 Using Cathodic Electrode in Lithium Ion

Abstract: In this work, the high potential properties of LiCrO2, as an isostructural material with LiCoO2 was considered for cathode material in lithium ion batteries (LIBs). In addition the lattice parameters and unit-cell position of this compound has also been checked for combination with the structural of LiCoO2 through refinements of X-ray diffraction patterns and bulk modulus through Birch–Murnaghan equation. The objective of this research is to prepare a composite with lower cost and better cyclability than the other cathode materials in lithium ion battery. A ternary composition with high efficiency and low cost containing LiCrO2 and LiNi1/2Mn1/2O2, was applied instead of pure LiCoO2 to reduce usage of the percentage Co amount in cathode materials of LiBs, consequently a benefit would be yielded by reducing the cost and removing the toxic of cobalt, the environment will be safe. In this study, we synthesized ten samples from mixture of xLiCrO2, yLiCoO2, and (1 – x – y) LiNi1/2Mn1/2O2 compounds for preparing suitable cathode electrodes with high initial discharge capacity, large cyclability and inexpensive cost instead of traditional cathode materials. As a result by using Raman Analysis, X-ray diffraction, and electrochemical analyzing, we found that the LiNi1/6Mn1/6Cr1/3Co1/3O2 composite has high efficiency and best performance in viewpoint of initial capacity, cyclability, charge capacity, and discharge capacity among these ten composites. After Raman analysis, since X-ray photoelectron spectroscopy (XPS) is an advanced method that evaluates the valence, composition percentages and the empirical formula of the elements, we used these methods for some of the samples.