What are the important advantages of solid-state lithium batteries?

①Solid-state lithium batteries do have many advantages. Because solid electrolytes are non-flammable, non-corrosive, non-volatile, and non-leakage, they will not cause spontaneous combustion events in the vehicle and greatly enhance safety. It is indeed an ideal Electric vehicle battery materials. ②Because of the traditional lithium battery using organic electrolyte, it is easy to cause the electrolyte to heat up under abnormal conditions such as overcharging and internal short circuit, which may cause spontaneous combustion and even self-explosion safety hazards. Solid-state batteries are based on conditions such as non-flammable, non-corrosive, non-volatile, and non-leakage of solid materials, and their safety factors have inherent advantages over lithium batteries. ③The lithium battery under the current system is close to the limit performance. Even the battery pack under the Tesla NCA18650 cell can reach an energy density of 250 Wh/kg, and the energy density of the 21700 cell used in Model 3 can reach 300 Wh/kg. , Supports a cruising range of 400 to 500 kilometers, but it still can’t solve the cruising range anxiety. The electrolyte of solid-state batteries does not require diaphragms and electrolytes, and does not have problems such as leakage or corrosion. It can simplify the battery casing and cooling system modules, further reduce the weight of the battery modules, and achieve the effect of energy saving. In addition, the new positive and negative electrode materials can make the electrochemical window reach more than 5V, and fundamentally increase the energy density, which is expected to reach 500 watt-hours/kg. At present, the ternary lithium battery pack commonly used in mainstream electric vehicles has certain defects, because no matter from the chemical structure or the battery structure, the ternary lithium material is very easy to generate heat. If the pressure cannot be transmitted in time, the battery is at risk of explosion. This is also due to most of the spontaneous combustion incidents of electric vehicles that have occurred this year. And in terms of endurance, the energy density of ternary lithium battery cells is currently facing a bottleneck, and it is difficult to break through. 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: What are the important differences between lithium batteries and lead-acid batteries?