Identifying the calendar aging boundary and high temperature capacity fading mechanism of Li ion battery with Ni-rich cathode

Temperature is well known to have a significant impact on the performance, safety, and cycle life of lithium-ion batteries. Increasing the operating temperature within the limits of safety and performance allowances facilitates the rapid acquisition of the capacity retention capability, enabling the construction of life prediction models. This paper combines the destructive and non-destructive analysis to determine the temperature boundary for LiNi0.8Co0.1Mn0.1O2 cathode based prismatic cells and clarify the aging mechanism of each component under high temperature calendar aging, which provides a great help for the experiment design in the actual application.