The group of scientists has created a working prototype of a fluoride-ion battery (FIB), which in terms of energy intensity is 10 times higher than the existing lithium devices and can function in room temperature.
Scientists from the Honda Research Unit, California Technical Institute and NASA take part in the development. The result of cooperation was a sample of a battery with a new type of chemical interaction, which is based on a stable liquid electrolyte with good ionic conductivity and high operating voltage.
In order to function efficiently, the former solid-state FIB required the temperature above 150 ° C. This limitation was the main obstacle in the development and operation of batteries.
To achieve the necessary indicators of electrolyte electrical conductivity under normal conditions, scientists from Honda used dry tetraalkylammonium fluoride salts placed in an organic fluorinated ester solvent. In combination with the composite cathode, which is a nanostructured core from copper, lanthana and fluorine, researchers have achieved a reversible electrochemical cycle at room temperature.
The secret of the success of a new type of battery is a small atomic fluorine mass that provides high energy density — 10 times greater than theoretical values for lithium-ion technologies. In addition to significantly superior energy intensity indicators, the FIB does not suffer overheating, and its production and operation harms the environment much less than other modern analogues.
There is still a lot of others.