Researchers have succeeded in creating batteries for electric cars that are safer, more ecological, and with better capacity. Their secret? A rubber electrolyte.
Theusually use an electrolyte who can take if they overheat or are damaged. Moreover, over time they form which reduce performance. Conversely, the in the solid state are more fragile and the contact of the solid electrolyte with the problematic.
Solid state batteries with high energy density
The researchers therefore used an elastomer to replace the electrolyte. Through a process ofat low temperatures, they managed to create crystals interconnected in the rubber structure. This creates an electrolyte with a high ionic and electrochemical stability, which does not form while ensuring good contact with the surface of the two electrodes.
Such batteries would be more stable and safe, better for the environment and cheaper to produce. This technology is primarily intended for electric cars and manages to achieve an energy density of more than 410 watt hours per, compared to about 260 watt-hours per kilogram for car batteries . based on rubber could therefore greatly increase the range of electric cars.