부산대학교 도서관

Lithium-sulfur (Li-S) batteries have garnered considerable attention as next-generation electrochemicalenergy storage systems because of their high theoretical energy density, natural abundance, and environmentallybenign sulfur active material. However, the commercialization of Li-S batteries is still hamperedby pronounced capacity fading over long-term cycling owing to lithium polysulfide shuttling behaviorand parasitic reactions on the surface of the Li metal anode. Herein, nitrogen-doped porous carbon witha high specific surface area was derived from the sucrose-driven pore generation of bio-sustainable andlow-cost meringue to overcome the abovementioned limitations and expedite the redox kinetics of sulfurspecies. After pyrolysis, carbon materials with a hierarchical pore structure were developed and utilizedto coat the surface of the separators, denoted as the meringue-derived hierarchical porous carbon (MHPC)interlayer as polysulfide regulator. The experimental results demonstrate that the meringue-derived porouscarbon interlayer effectively suppresses lithium polysulfide shuttling through physical and chemicaltrapping and facilitates redox reactions, leading to improved electrochemical performance. This workhighlights a promising approach for converting sustainable biomass into energy storage materials.