Dresden 2026 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 4: Energy Storage Materials and Devices I

CPP 4.1: Hauptvortrag

Montag, 9. März 2026, 09:30–10:00, ZEU/0255

Exploration of Cathode Materials for Li-S Batteries — •Yan Lu — Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin, Germany

Recently, a lot of efforts have been devoted into lithium-sulfur (Li-S) battery system due to its high theoretical capacity (1675 mAh g-1) and low cost, which could be a competitive candidate for the next-generation batteries in the future. However, it suffers from a poor cycling stability during charging-discharging, which is blamed to the "shuttle effects" of lithium polysulfides. Fundamental understanding of the formation and dissolution processes of both solid phases, S8 and Li2S, is necessary for the development of advanced cathode materials (both organosulfur and metal compound-based sulfur host) with improved electrochemical performance. Synchrotron-based operando high-resolution X-ray imaging has been successfully used for the detailed morphology study of sulfur particles during cycling of the battery cells. Using colloidal route, complex hybrid carbon nanostructures have been synthesized using colloidal polymeric particle as soft template, which have been applied as cathode materials for Li-S batteries.

Keywords: sulfur cathode; Li-S batteries; operando analysis; shuttle effects