Modulating Ion-Dipole and Dipole-Dipole Interactions for Stable Wide-Temperature-Range Lithium-Sulfur Batteries Enabled by Quantum-Dot Catalysts.

ABSTRACT: The incomplete conversion of sulfur species, particularly the pivotal intermediate solid Li₂S₂ during redox processes, poses a significant limitation on the cyclability of lithium-sulfur batteries (LSBs). Herein, a synergistic modulation strategy of ion-/dipole-dipole interactions that tailors the solvation sheath configuration and activates the electrochemical reactivity of Li₂S₂ is initially proposed for accelerating kinetics. As a proof of concept, the molybdenum nitride quantum dots located on nitrogen-doped carbon (MoNQDs/NC) were designed. Advanced in situ/ex situ characterizations combined with theoretical calculations reveal that MoNQDs/NC effectively weaken the ion-dipole interactions within Li(solvent)_x ⁺ species,

SUBMITTER: He Y 

PROVIDER: S-EPMC12455398 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature