Li Dendrite Interaction Inside Lithium Ion Batteries (LIBs) during Fast and Long Cycling, a Reason of Battery Firing

Abstract By this work, we designed and fabricated a temperature monitoring sensor including engineering strategies aimed at enhancing cathode performance by a mechanical hydrogen sensor for early safety warning in electric vehicles. Since generation of H2 due to the reaction of lithium metal and polymers is earlier than the “thermal runaway,” therefore, detection of hydrogen even with negligible amounts by a sensor can be help us as a warning sign. By this work, we investigated sensing mechanism of H2 sensor through the resistive RT H2 detector for early safety warning of LIBs. We also used advanced Techniques for Internal Temperature monitoring in our fabricated sensor. By this work we synthesized various composites with several transition metals mole fraction through sol gel method for cathode materials using situ designing and manufacturing as well as testing of a temperature monitoring sensor. We found composite with structure of LiNi3/18 Co6/18Mn3/18Fe3/18O2 composite has high efficiency and best performance in viewpoint of initial capacity, cyclability, charge capacity, and discharge capacity among these ten composites, as well as safety warning for electric vehicles usage compared with other samples in those cathode materials.