Study And Evaluation of The Active Material Used In The Manufacture Of Lithium-Ion Cell Cathode

Abstract

This study aims to evaluate the performance of three commonly used cathode materials in lithium-ion batteries and to identify the behavior and effects of these materials: lithium-cobalt oxide (LiCoO2)-LCO, lithium-manganese-nickel cobalt oxide (LiNiMnCoO2) NMC532 and lithium iron phosphate LFP (LiFePO4). The electrical and chemical properties of these materials were evaluated in this research by analyzing the capacity, energy efficiency and performance stability. The results show that LFP provides stable and good long-term performance, but the prevailing voltage is not large, not exceeding 3.3-3.2 V, while LCO records higher energy with a voltage of 4 V, but its stability may decrease over time, while NMC532 shows a good balance between capacity and longevity and high values ​​for the voltage of 4.19 V. The first charge was very stable for cells manufactured using LCO, and the study concluded that the NMC532 formulation is a marketable product. The results showed that LFP provides high stability in long-term performance, while LCO recorded the highest capacity, while NMC532 shows an ideal balance between capacity and longevity. It also indicates that the specific capacity of (LCO) was the highest at 210 mAh/gr, while NMC532 was average at 188 mAh/g, while LiFePO4 showed a specific capacity of about 157 mAh/g with greater stability in repeated cycles