Heteroatom-Synergistic Effect on Anchoring Polysulfides In Chalcone-Linked Nanographene Covalent Organic Frameworks for High-Performance Li─S Batteries.

ABSTRACT: Lithium-sulfur (Li─S) batteries are an attractive option for future energy storage devices because they offer higher theoretical specific capacity, energy density, and cost-effectiveness than commercial lithium-ion batteries. However, the practical applications of Li─S batteries are significantly limited by the shuttle effect caused by intermediate lithium polysulfides (LiPSs) and slow redox kinetics. In this study, the molecular engineering of chalcone-linked, sp²-bonded nanographene-type covalent organic frameworks (COFs) as sulfur hosts is reported to enhance interactions with LiPSs, thereby effectively suppressing the shuttle effect. The developed sulfur-hosting cathode material demonstrated outstanding battery performance, surpassing most reported materials by achieving a s

SUBMITTER: Ranjeesh KC 

PROVIDER: S-EPMC12021064 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature