PRESSURE INDUCED TRANSITION MATERIALS FOR IMPROVED ELECTRODE SAFETY AND PERFORMANCE

원문 (중국어)

A battery cell may incorporate a pressure induced transition (PIT) material that undergoes a transition in response to changes in the internal pressure of the battery cell caused by the changes in the volume of the electrode in the battery cell that occur during the charging and discharging of the battery cell. The transition may include transformations that relieves the mechanical stress arising from the change in internal pressure as well as transformations that enhance the performance of the electrode. For example, the transition may include a phase change that manifests as a contraction in volume to accommodate the expansion of the electrode. This transition may also manifest as a reduction in bandgap to enhance the conductivity of the electrode. In some cases, the pressure induced transition (PIT) material may transition to provide a mechanical reinforcement of the electrode, thus limiting further changes in the volume of the electrode.