Demanded batteries for electromobility require a higher energy density and cycle stability than the-state-of-art lithium-ion batteries. Among next-generation batteries, lithium-sulfur is considered as a potential candidate offering high gravimetric energy density. However, the realization of this system as commercial product remains challenged due to the capacity fade originating from the so-called polysulfide-shuttle effect (PSS) as well as the problems associated with using metallic lithium as negative electrode namely unstable solid electrolyte interphase and dendrite formation. The battery group at DLR is focusing on different approaches to address these challenges and optimize Li-S batteries aiming at increasing sulfur utilization, extending lifetime and revealing origin and approaches to avoid capacity fade:
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