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

Advantages of all solid-state lithium battery 1. High safety performance. Compared with the electrolyte of the traditional lithium battery, it is less prone to short circuit and the system temperature is relatively low. Therefore, the battery is less likely to explode. 2. High energy density. Energy density has always been one of the bottlenecks in the development of lithium batteries, and solid electrolytes not only have good electrochemical performance, but are also small and stable. Therefore, more high-voltage cathode materials can be installed to greatly increase the energy density. 3. Good cycle performance. After the lithium battery uses a solid electrolyte, it will not form an SEI film (solid electrolyte interface film) and lithium dendrites during the charging and discharging process, which greatly improves the cycle and service life of the lithium battery. 4. Light weight. In traditional lithium batteries, the diaphragm and electrolyte together account for nearly 40% of the volume and 25% of the mass of the battery, and the use of solid electrolytes can naturally reduce the volume and mass. Disadvantages of all solid-state lithium batteries 1. The interface impedance is too large. The interface between the solid electrolyte and the electrode material is in a solid-solid state, so the effective contact capacity between the electrode and the electrolyte is weak, resulting in low ion transport kinetics in the solid substance. 2. Fast charging is more difficult. Because the impedance and conductivity of the battery are large, the large internal resistance hinders charging and the capacity is easy to lose. 3. High cost. The immaturity of the two technologies of solid electrolyte manufacturing and solid-solid interface optimization are enough to keep the cost of solid state batteries high. 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 install and replace the UPS power battery?