Are polymer batteries safe enough?

When the battery is overcharged and discharged, the internal temperature of the battery continues to rise, the gas that appears during activation expands, the internal pressure of the battery increases, and the pressure reaches a certain level. If the shell is scarred, it will rupture, causing liquid leakage, fire or even explosion. Ordinary polymer lithium-ion batteries use colloidal electrolytes, so they will not explode due to a large amount of gas generated by the boiling of the liquid, which improves the safety. Compared with liquid lithium-ion batteries, polymer lithium-ion batteries have the advantages of thinness, any area, and any shape. Therefore, the battery shell can be made of a lighter aluminum-plastic composite film, thereby increasing the specific capacity of the entire battery; polymer lithium-ion batteries can also use polymers as negative electrode materials, and their energy will be higher than current liquid lithium-ion batteries. In addition, polymer lithium-ion batteries are superior to lithium-ion batteries in terms of operating voltage and charge-discharge cycle life. Based on the above advantages, polymer lithium-ion batteries are called next-generation lithium-ion batteries. At present, most of the domestic polymer batteries are only flexible packaging batteries, with aluminum-plastic film as the shell, and the electrolyte has not changed. This battery can also be thinner, and its low-temperature discharge characteristics are better than polymer batteries. The energy density of the material is basically the same as that of liquid lithium ion batteries and ordinary polymer batteries, but due to the use of aluminum plastic film, it is lighter than ordinary liquid lithium ion batteries. In terms of safety, when the liquid is boiling, the aluminum-plastic film will naturally rupture and will not explode. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How to use lithium-ion batteries correctly?