Tesla battery research team breaks through to extend battery life without anode

According to foreign media reports, the Tesla Canada battery research team led by Jeff Dahn is about to develop a new generation of batteries with transformative battery density. In a paper, the team proposed how to use electrolyte solutions to deal with the failure of anodeless batteries. The paper is titled 'Diagnosing and correcting the failure of anodeless batteries through electrolyte and morphological decomposition.' The battery team said that compared with traditional lithium batteries, some anodeless batteries can store more energy per unit volume, which is related It is crucial to increase the cruising range of electric vehicles. In addition, anodeless batteries are also lighter than traditional batteries. However, with the increase of energy storage capacity, the anodeless battery also has its shortcomings. One of them is the rapid loss of battery capacity and short cycle life. In addition, non-anode batteries also have safety issues, and the lithium metal inside them will also have safety risks. However, Dahn and his team proposed that when using a bi-salt carbonate electrolyte solution, the battery degradation problem can be alleviated and the life of the anodeless battery can be prolonged. The team said: 'Recently, we have realized a long-life anodeless battery using double salt carbonate electrolyte. We have used this liquid electrolyte to characterize the degradation of an anodeless battery. Scanning electron microscope and X-ray tomography were used to observe the original lithium. The deterioration of the morphology, and the use of nuclear magnetic resonance spectroscopy and ultrasound transmission map to diagnose the cause of electrolyte degradation and depletion. In order to detect safety, we also measured the temperature of the battery during acupuncture detection.' When the Dahn team used it in the battery In the double salt carbonate electrolyte solution, an inactive lithium mixture appears, which can form a large lithium column in the battery, creating an ideal lithium form inside the battery, thereby solving the problem of short battery life. Before this, Tesla also applied for a patent for an electrolyte solution, which can prolong the service life of the battery when the solution is added to the lithium battery. (Poke Tesla applied for a patent for lithium metal/anodeless battery electrolyte to improve battery capacity retention) The optimized electrolyte successfully extended the life of the anodeless battery to 200 charge and discharge cycles. Previously, Stanford University issued a report in June. The test of the anodeless battery found that the capacity of the battery dropped to 80% after 100 runs. Extending battery life can ultimately allow electric vehicles to be equipped with longer-lasting batteries. Tesla has also been developing batteries with a lifetime of up to millions of miles, and it may be announced on Tesla Battery Day on September 22. 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: Australian anode materials enter the Chinese market