Abstract

Layered structural materials based on alkali metal oxide - transition metal oxide compositions are under scrutiny as promising candidates for positive electrodes in sodium ion batteries. In this study, we have successfully synthesized Na0.7Ni0.6Mn0.2Co0.2O2 utilizing the sol-gel method in conjunction with calcination processes. The findings reveal that the synthesized material exhibits a P3 structure ideally suited for deployment as a positive electrode in sodium ion batteries. The material Na0.7Ni0.6Mn0.2Co0.2O2 demonstrates a peak specific capacity of 109.0 mAh g-1 at a current density of 5 mA g-1, retaining 66.8% of this capacity following 50 consecutive charge-discharge cycles at a current density of

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