What are the advantages of all solid-state lithium secondary batteries?

Since the electrolyte contains flammable organic solvents, the attack of a temperature surge during an internal short circuit can easily cause combustion or even explosion. The equipment must resist temperature rise and short circuit safety equipment structure, which will increase capital, but still cannot completely solve the safety problem. It is claimed that BMS is the best Tesla in the world, and ModelS suffered a serious fire in my country this year alone. Many inorganic solid electrolyte data are non-flammable, non-corrosive, non-evaporating, and non-leakage, and are expected to overcome the lithium dendritic phenomenon. Therefore, the all-solid lithium secondary battery based on the inorganic solid electrolyte is expected to have higher safety characteristics. Polymer solid electrolyte still has a certain burning risk, but compared with liquid electrolyte batteries containing flammable solvents, its safety has been greatly improved. (2) High energy density Currently, the energy density of lithium batteries used in stores can reach up to about 300Wh/kg. Regarding all-solid-state lithium batteries, if metallic lithium is used in the cathode, the energy density is expected to reach 300-400wh/kg or even higher. This requirement indicates that since the density of solid electrolytes is higher than that of liquid electrolytes, with regard to the same positive and negative data system, the energy density of liquid electrolyte lithium batteries is significantly higher than that of all solid lithium batteries. The energy density of the entire solid lithium secondary battery is high, because the cathode can use metal lithium data. (3) Long cycle life The solid electrolyte can prevent the liquid electrolyte from continuing to form and grow the solid electrolyte interface film during the charge and discharge process, and lithium dendrites penetrate the film, which can greatly improve the cycle and service life of the metal lithium battery. (4) Wide operating temperature range If all solid-state lithium batteries use inorganic solid electrolytes, the maximum operating temperature is expected to increase to 300°C or even higher. At present, the low-temperature function of large-capacity all-solid-state lithium batteries needs to be improved. The specific operating temperature range of the battery is mainly related to the high and low temperature characteristics of the electrolyte and the interface resistance. (5) Wide electrochemical window The electrochemical stability window of all solid-state lithium batteries is wide, up to 5V, which is suitable for high-voltage electrode data and is beneficial to further improvement of energy density. The current mainstream triple battery voltage is between 4.2v and 4.5v. It has the advantage of flexibility. All solid-state lithium batteries can be made into thin-film batteries and flexible batteries, which can be used in smart wearable and implantable medical devices in the future. Related to the flexible liquid electrolyte lithium battery, the packaging is simpler and safer. 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: Buy an electric car to buy a lithium battery or a lead-acid battery?