Science Daily August 29, 2023
The power capability of Li-ion batteries has become increasingly limiting for the electrification of transport on land and in the air. The specific power of Li-ion batteries is restricted due to the required cathode thickness of a few tens of micrometers. Researchers in Switzerland have developed a design of monolithically stacked thin-film cells that had the potential to increase the power ten-fold. They demonstrated an experimental proof-of-concept consisting of two monolithically stacked thin-film cells. Each cell consisted of a silicon anode, a solid-oxide electrolyte, and a lithium cobalt oxide cathode. The battery could be cycled for more than 300 cycles between 6 and 8 V. Using a thermo-electric model, they predicted that stacked thin-film batteries could achieve specific energies >250 Wh kg−1 at C-rates above 60, resulting in a specific power of tens of kW kg−1 needed for high-end applications such as drones, robots, and electric vertical take-off and landing aircrafts… read more. Open Access TECHNICAL ARTICLEÂ
Vacuum-deposited solid-state battery designs. Credit: Communications Chemistry volume 6, Article number: 110 (2023)