What are the advantages of all solid-state lithium batteries compared to liquid lithium batteries

1) All solid-state lithium-lithium batteries have high safety performance. Since the liquid electrolyte contains flammable organic solvents, a sudden increase in temperature when an internal short circuit occurs may cause combustion or even explosion. It is necessary to install a safety device structure that resists temperature rise and short circuit. Increased costs, but still can't completely deal with security issues. The Tesla, which claims to be the best BMS in the world, has caused serious fire incidents in two ModelS in China alone this year. Many inorganic solid electrolyte materials are non-flammable, non-corrosive, non-volatile, and have no leakage problems. They are also expected to overcome the lithium dendritic phenomenon. Therefore, all-solid-state lithium secondary batteries based on inorganic solid electrolytes are expected to have high safety characteristics. Polymer solid electrolytes still have a certain combustibility risk, but compared to liquid electrolyte batteries containing flammable solvents, their safety is also greatly improved. (2) All-solid-state lithium-lithium batteries have high energy density. At present, the energy density of lithium battery cells used in the market is up to about 260Wh/kg, and the energy density of lithium batteries under development can reach 300-320Wh/kg. For all-solid-state lithium batteries, if metal lithium is used as the negative electrode, the battery energy density is expected to reach 300-400Wh/kg, or even higher. It should be noted that since the density of solid electrolytes is higher than that of liquid electrolytes, the energy density of liquid electrolyte lithium batteries is significantly higher than that of all solid-state lithium batteries for the same system of positive and negative materials. The reason why the all-solid-state lithium secondary battery has a high energy density is because the negative electrode may use metal lithium materials. (3) The long cycle life of all solid-state lithium-lithium batteries. The solid electrolyte is expected to guard against the problem of the liquid electrolyte continuing to form and grow the solid electrolyte interface film during the charging and discharging process and the problem of lithium dendrites piercing the separator, which may greatly improve the cycle of metal lithium batteries. Performance and service life. The thin-film all-solid-state metal lithium battery has been reported to be able to cycle more than 45,000 times, but there are no reports of long cycle life for large-capacity lithium metal batteries. Poor. (4) All-solid-state lithium-lithium batteries have a wide operating temperature range. If all-solid-state lithium batteries use inorganic solid electrolytes, the maximum operating temperature is expected to increase to 300C? or even higher. At present, the low-temperature performance of large-capacity all-solid-state lithium batteries needs to be improved. The detailed battery operating temperature range is closely related to the high and low temperature characteristics of the electrolyte and interface resistance. (5) Wide electrochemical window of all-solid-state lithium-lithium batteries The electrochemical stability window of all-solid-state lithium batteries is wide, possibly reaching 5V, which is suitable for high-voltage electrode materials and is beneficial to further increase the energy density. At present, thin-film lithium batteries based on lithium nitride phosphate can work at 4.8V. (6) All-solid-state lithium-lithium batteries have the advantages of flexibility. All-solid-state lithium batteries can be prepared into thin-film batteries and flexible batteries, and can be used in smart wearable and implantable medical equipment in the future. As for the flexible liquid electrolyte lithium battery, packaging is easier and safer. (7) Convenient recovery of all-solid-state lithium-lithium batteries. Generally speaking, there are two methods for battery recycling, one is wet method and the other is dry method. The wet method is to take out the toxic and harmful liquid core, and the dry method is to extract the effective ingredients such as bursting. The advantage of the all-solid-state lithium battery is that there is no liquid in it, so theoretically there should be no waste liquid, and the solution is relatively simple. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What kind of battery is a high-rate power lithium battery?