Performance of NMC622 Cathode - LTO Anode Full Cell Lithium Ion Battery

Abstract

At present, the demand for renewable energy sources is steadily increasing, and accordingly, the use of electric vehicles has become more widespread. This trend has led to a growing focus on the development of alternative anode and cathode materials. In this study, NMC622 (LiNi0.6Co0.2Mn0.2O2) with a layered structure was employed as the cathode, while spinel-structured LTO (Li4Ti5O12), which holds the second-largest market share after graphite, was selected as the anode. The crystal structures of the prepared anode and cathode electrodes were characterized using X-ray diffraction (XRD). The electrochemical performance of the full cell was evaluated by assembling it into a CR2032-type coin cell. The full cell was initially activated at a rate of 0.1 C, after which galvanostatic charge/discharge tests were performed to assess its electrochemical performance at rates of 0.5 C, 1 C, 2 C, and 5 C over 100 cycles. The initial discharge capacities at 0.5 C, 1 C, 2 C, and 5 C were determined as 127, 120, 105, and 70 mA h g-1, respectively. Across all C-rates, the capacity retention ratios were found to vary between 65% and 70%.