imec fordobler energi-densiteten i solid-state batterier
imec har annonceret en Li-metal battericelle med en banebrydende energidensitet på 400 Wh/liter (in english).
imec, a world-leading research and innovation hub in nanoelectronics, digital and energy technologies and partner in EnergyVille, announced at the European Electric Vehicle Batteries Summit a solid-state Li-metal battery cell with an unsurpassed energy density of 400 Wh/liter at a charging speed of 0.5C (2 hours).
Imec also announced that they have started to upscale the materials and processes in a pilot line for fabrication of solid-state pouch cells at the EnergyVille Campus in Genk (Belgium) and is set-up in collaboration with the University of Hasselt. With its engineering roadmap for solid-state batteries, imec aims to surpass wet Li-ion battery performance and reach 1000Wh/L at 2-3C by 2024.
Today’s rechargeable Li-ion battery technology still has room for improvement, but not enough to significantly improve e.g. the range and autonomy of electrical vehicles. Therefore, imec’s researchers are working to replace the wet electrolyte with a solid material, which provides a platform to further increase the energy density of the cell beyond that of cells based on liquid electrolyte.
The solid nanocomposite electrolyte that the R&D center has developed has an exceptionally high conductivity of up to 10 mS/cm with a potential for even higher conductivities. A distinguishing feature of the new material is that it is applied as a liquid – via wet chemical coating – and only afterwards converted into a solid when it is already in place in the electrodes. That way it is perfectly suited to be casted into dense powder electrodes where it fills all cavities and makes maximum contact, just as a liquid electrolyte does.
