Stress State Characterization of Li-Ion Batteries Based on a Membrane Sensor

       In this work, the effect of uneven force on battery operation is systematically investigated by using a membrane sensor with a combination of experiments and simulations, and the reasons for the trend of stress changes are given with simulations. Uneven stress can induce the formation of lithium dendrites and lead to uneven capacity utilization, and it is crucial to ensure the uniformity of stress distribution to improve the safety and electrochemical performance of batteries.

August 2023