THERMAL RUNAWAY SUPPRESSANT OF LITHIUM BATTERIES AND THE RELATED APPLICATIONS

The invention provides a thermal runaway suppressant of lithium batteries and the related applications. The thermal runaway suppressant includes a passivation composition supplier, for releasing a metal ion (A), selected from a non-lithium alkali metal ion, an alkaline earth metal ion or a combination thereof, and an amphoteric metal ion (B), a polar solution supplier and an isolating mechanism, which is capable of separating the passivation composition supplier and the polar solution supplier within a predetermined temperature. When the isolating mechanism is failed and the polar solution supplier releases a polar solution to carry the metal ion (A) and the amphoteric metal ion (B) into the lithium battery and react with the positive active material and the negative active material to a state with lower energy. The voltage of the whole battery is decreased and the electrochemical reaction pathway is blocked to prevent the thermal runaway from occurring.