Synergistic Cathode-Electrolyte Engineering for Enhanced Longevity in Li-S Batteries.

ABSTRACT: Due to the notorious shuttle effect and the uneven deposition of lithium ions under high current conditions, lithium-sulfur batteries with ultra-high sulfur loading struggle to achieve stable long-cycle performance. Herein, a novel MBene-based composite material is prepared using the ultrasonic freeze etching method as a cathode host. The shuttle effect is effectively inhibited, thanks to its unique structure and abundant active sites. Moreover, a small amount of Na₂SeO₃ is introduced into the electrolyte to further enhance the long-cycle performance. Due to the "reverse tip effect," where sodium ions preferentially deposit over lithium ions, the growth of lithium dendrites is effectively suppressed. Remarkably, the cell with the novel cathode and electrolyte design e

SUBMITTER: Li Z 

PROVIDER: S-EPMC12447050 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature