Article

Researchers at the Paul Scherrer Institute (PSI) have developed a new production process for lithium metal all-solid-state batteries, enhancing energy storage, safety, and charging speed compared to conventional lithium-ion batteries. The study, published in Advanced Science, addresses two major challenges: the formation of lithium dendrites and electrochemical instability at the lithium metal anode interface.

The team, led by Mario El Kazzi, utilized an argyrodite type LPSCl solid electrolyte and implemented a gentle sintering method at about 80 degrees Celsius to create a dense microstructure. A lithium fluoride coating was applied to the anode to stabilize the interface.

Laboratory tests showed the battery maintained approximately 75% capacity after 1,500 cycles, indicating potential for surpassing conventional batteries in energy density and durability. This process offers ecological and economic benefits for industrial production of these batteries.