What are the obvious advantages of solid-state batteries?

Solid-state batteries have obvious advantages A few days ago, the news that a one-minute charge and a continuous driving distance of 800 kilometers attracted the attention of the industry and focused people’s attention on solid-state batteries. Although this news disclosed by Fisker still has a lot to discuss, it at least shows that solid-state batteries have obvious advantages and are expected to become a new direction for the development of lithium-ion batteries for new-powered cars. Most of the new-powered cars now use traditional lithium batteries, which contain liquid organic electrolytes, and solid-state batteries without liquid electrolytes have many advantages. Liu Hongtao, a professor at the School of Chemistry and Chemical Engineering of Central South University, explained in an interview with a reporter from my country Car News that solid-state batteries have six obvious advantages compared with the liquid lithium batteries currently used. The first is a high safety function. Traditional lithium batteries use organic liquid electrolyte. Under abnormal conditions such as overcharging and internal short circuit, the battery is prone to heat, causing the electrolyte to expand, spontaneously ignite, and even explode, posing serious safety hazards. Many inorganic solid electrolyte materials are non-flammable, non-corrosive, non-volatile, and have no leakage problems. Compared with liquid electrolytes containing flammable solvents, polymer solid electrolytes have greatly improved battery safety. The second is high energy density. Lithium metal can be used as the negative electrode of solid lithium batteries. The energy density of the battery is expected to reach 300-400Wh/kg or even higher. Its electrochemical stability window can reach more than 5V, which can match high-voltage electrode materials to further improve quality and energy. Density; There is no liquid electrolyte and barrier, which reduces the weight of the battery, shrinks the internal space of the battery, and improves the volumetric energy density; the safety is improved, the battery shell and cooling system modules are simplified, and the system energy density is improved. The third is the long cycle life, which is expected to prevent the liquid electrolyte from continuing to form and grow the SEI film during the charging and discharging process and the lithium dendrite piercing the barrier, greatly improving the cycle and service life of the metal lithium battery. The fourth is a wide operating temperature plan. The solid-state lithium battery has excellent acupuncture and high-temperature stability. If all inorganic solid electrolytes are used, the maximum operating temperature is expected to reach 300°C, thereby preventing the positive and negative materials from reacting with the electrolyte at high temperatures. The heat is out of control. Fifth, the production power is improved, without the need to encapsulate liquid, and supports serial superimposed arrangement and bipolar organization, which can reduce the ineffective space in the battery pack and increase the production power. Sixth, it has the advantages of flexibility. All solid-state lithium batteries can be prepared into thin-film batteries and flexible batteries. Compared with flexible liquid electrolyte lithium batteries, the packaging is easier and safer, and it can be used in smart wearable and implantable medical devices in the future. 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 factors can cause excessive internal resistance of lithium batteries?