A Study on the Design Conditions of NP Ratio according to the Operating Temperature of Lithium-Ion Battery

Abstract

In this study, in preparation for diversification of applications, the results of the half-cell formation cycles at 25℃ and 40℃ were compared to see how temperature changes affect the reversible specific capacity and initial Coulombic efficiency of active materials. And, a three-electrode system with a reference electrode was used for accurate potential measurement. For more accurate full cell capacity prediction, the cathode and anode limit design was applied. And the accuracy of the design is verified through the voltage behavior of the cathode and anode using a three-electrode system. Based on the results of the half-cell formation cycle at 25℃ and 40℃, respectively, the process of designing a full cell and predicting capacity was dealt with. And it was studied how the difference between design temperature and operating temperature affects the full cell.