According to foreign media reports, the Pacific Northwest National Laboratory (PNNL) has developed a new battery electrolyte formulation that aims to extend battery life and battery capacity, thereby increasing the mileage of electric vehicles.
In a separate project, engineers at the University of Colorado are developing electric vehicle technology to ensure that vehicles use wireless charging technology. The new battery electrolyte can double the life of the battery, This will increase the cruising range of electric vehicles by 2-3 times. PNNL is focused on meeting the current challenges and technical challenges of lithium-ion batteries.
The researchers added a fluorine-based solvent to the electrolyte, and the lithium-based salts changed to salt clusters, which formed localized, highly concentrated lithium salts in the solution. To prevent corrosion of the electrolyte, so as to avoid the formation of lithium crystal branches.
During crystallization, these lithium salt crystals tend to form crystal or dendritic structures, resembling snowflake-like and frost patterns. In addition, lithium crystal branches can easily lead to short-circuit of the battery and shorten its service life.
The new idea of the electrolyte has been tested on laboratory battery cells, but the size of the cell is only as large as the watch battery. After 100 times of charge and discharge, although the traditional electrolyte can still maintain its battery capacity, the new The developed electrolyte can withstand 700 times of charge and discharge process, making the service life of the battery up to 7 times.
The concept of using electric field to realize radio energy transmission is considered to be impossible to achieve in practical applications. Because the gap between the vehicle and the road is large, the current capacity generated by it is extremely small.
The researchers designed an array of parallel metal plates. Each group of metal plates consists of a base plate and a top plate. The gap between the two plates is 12 cm. The top plate is a power receiving plate and is connected to the vehicle. The bottom plate is a power transmission plate. Fixed on the pavement.
The device can transmit megahertz current, using a 12-cm gap to deliver current.
