Molecular Clip Strategy of Modified Sulfur Cathodes for High-Performance Potassium Sulfur Batteries.

ABSTRACT: Potassium-sulfur (K-S) batteries are severely limited by the sluggish reaction kinetics of the cyclooctasulfur (cyclo-S₈) electrode with low conductivity, which urgently requires a novel cathode to facilitate activity to improve sulfur utilization. In this study, using the wet chemistry method, the molecular clip of Li⁺ is created to replace cyclo-S₈ molecular with the highly active chain-like S₆ ^2- molecular. The molecular clip strategy effectively lowers the reaction barrier in potassium-sulfur systems, and the stretching of S─S bonds weakens the binding between sulfur atoms, facilitating the transformation of potassium polysulfides (KPSs). The as-prepared cathode exhibits a reversible capacity of 894.8 mAh g^-1 at a curren

SUBMITTER: Chen T 

PROVIDER: S-EPMC11884556 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature