Abstract
Sulfide-based solid-state batteries are predicted to have several advantages compared to conventional lithium ion batteries, e.g. in the aspects of safety, rate performance and energy density. These advantages are faced with challenges regarding large scale processing. Therefore, the focus of this publication lies, among others, on a scalable solvent-based process route using a dissolver to produce sulfide solid-state cathodes and separators. The formulation of the slurries was systematically varied (for example type of solid electrolyte and conductive additive content) to investigate the influence of the recipe on the mechanical and electrochemical properties of the cathode and separator. From the investigated compositions, the best were chosen for full cell assembly with indium at the anode side and cycling experiments were performed. These revealed a cathode active material utilization of up to 87% for the first discharge and a coulombic efficiency of ~92% after 10 cycles.
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