Honda made a new type of battery for electric cars workDecember 7, 2018
Researchers at the company have learned how to create batteries with high charge storage density and low operating temperature.
Employees of the Honda Research Institute, together with scientists from the California Institute of Technology and NASA’s Jet Propulsion Laboratory, have developed a new type of electrolyte that will allow you to create batteries with high charge storage density and low operating temperature. The research results are published in the journal Science.
“Fluoride-ion batteries (FIB) offer a new chemical composition with a storage density of charge ten times more than the current lithium-ion batteries,” said the chief researcher at the Honda Research Institute and co-author Christopher Brooks. “They are not subject to overheating, and the extraction of raw materials for such batteries is not as destructive to the environment as the extraction of lithium or cobalt.”
Batteries with solid electrolyte that conduct fluoride ions have existed for a long time, but they only work at high temperatures and, in fact, are an intermediate stage in the development of technology. Honda-designed liquid electrolyte allows you to make safer and more environmentally friendly batteries.
In its current development, solid-state fluoride-ion batteries require high temperatures for normal operation – more than 150 degrees Celsius. A team of researchers was able to find a method for producing a fluoride-ionic electrochemical cell capable of operating at a much lower temperature. This was made possible by creating a chemically stable, liquid electrolyte with a high conductivity of fluoride ions and a wide operating voltage. By combining it with a composite cathode using a core with copper, lanthanum, and fluorine nanostructures, the researchers were able to start a reversible electrochemical cycle at room temperature.
Honda expects that in the future, batteries created on the basis of this study can be used in automobiles, as well as in power engineering, from lawn mowers to generators.