What are the ways to prevent lithium-ion batteries from catching fire?

Nano-engineers at the University of California, San Diego have developed a safety feature that can prevent lithium-ion metal batteries from heating up and catching fire when they are internally short-circuited. The team has ingeniously adjusted the part called the separator in the lithium-ion battery. The separator is the barrier between the positive and negative electrodes of the lithium-ion battery. In this way, when the lithium-ion battery is short-circuited, the energy accumulated in the battery (also (That is, heat) flow will slow down. After repeated charging of lithium-ion metal batteries, a needle-like structure of dendrites will appear on the anode. Over time, the dendrites grow long enough to penetrate the diaphragm and build a bridge between the anode and cathode, causing an internal short circuit. When this happens, the flow of electrons between the two electrodes is out of control, causing the lithium-ion battery to immediately overheat and stop working. 1. Add flame retardant to the existing electrolyte. However, in order to achieve flame retardancy, it is necessary to add a large amount of flame retardant to the electrolyte, which will correspondingly reduce the ionic conductivity of the electrolyte and significantly affect the electrochemical performance and energy density of the lithium ion battery. 2. Protection is achieved by adding a dedicated protection circuit, such as: to prevent overcharging of lithium-ion batteries, install a PTC polymer switch or explosion-proof safety valve in the safety helmet of the battery. 3. The thermal stability of lithium-ion batteries is related to the type of cathode material and electrolyte. By optimizing the synthesis conditions and improving the synthesis method, the cathode material with good thermal stability is synthesized. 4. Weakly oxidize the surface of carbon materials, such as: reduction, doping, surface modification, etc.; or use spherical, fibrous carbon anode materials to improve the thermal stability of lithium-ion batteries. 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 article: How to re-use used lithium-ion batteries?