FABRICATION AND ELECTROCHEMICAL CHARACTERIZATION OF CATHODE MATERIAL Na1.0Li0.05Mn0.6Ni0.3Al0.05O2 FOR SODIUM ION BATTERIES

Abstract

Sodium-ion batteries exhibit structural and operational similarities to lithium-ion batteries, and they are increasingly recognized as a viable alternative to lithium-ion batteries. In this context, it is imperative to investigate electrode materials specific to sodium-ion batteries to enhance their capacity, stability, and cost-effectiveness, thereby facilitating their commercialization in the near future. In pursuit of these objectives, this study successfully synthesized Na1.0Li0.05Mn0.6Ni0.3Al0.05O2using a sol-gel method followed by calcination. The resulting material demonstrated a P2 crystal structure and achieved a maximum specific capacity of 142.2 mAh g-1 at a discharge current density of 10 mA g-1 within the voltage range of 1.5 to 4.1 V. Furthermore, the material exhibited commendable stability, maintaining 89.1% capacity retention after 50 cycles and 76.4% after 100 charge-discharge cycles at a current density of 15 mA g-1 within the same voltage range, indicating its potential as a cathode material for sodium-ion batteries.