The safety of lithium batteries has always been the focus of consumers' concerns, especially after experiencing the impact of safety reports like Tesla's electric car on fire.

　　How to prevent the explosion of lithium batteries from the root cause?

　　1. Use solid electrolytes to develop solid lithium batteries, but the cost is relatively high. At present, this solution is still in the laboratory stage.

　　2. Add flame retardant to the existing electrolyte. However, this requires the addition of a large amount of flame retardant, which will correspondingly reduce the ionic conductivity of the electrolyte, and significantly affect the electrochemical performance and energy density of the lithium battery.

　　3. Researchers have created a new type of "smart" electrospinning separator, which has a heat trigger mechanism and contains flame retardants. When the internal heat of the lithium battery is too high, it will dissolve due to the high temperature and release the flame retardant, thereby effectively inhibiting the burning of the highly flammable electrolyte. Of course, it will also have a negative impact on the battery performance.

　　The safety performance of lithium batteries is the most important of all performances. When various properties conflict, safety should be the priority.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries, and are the first choice for grid-connected peak shaving, off-grid energy storage, photovoltaic energy storage, UPS, data centers and other industries.