Vanadium Nitride Decorated Graphene With Abundant Active Sites as Chemical Anchor of Polysulfides and Redox Catalysts in Aluminum Sulfur Batteries for Enhanced Performance.

ABSTRACT: Aluminum-sulfur (Al-S) batteries are garnering significant interest as candidates for affordable energy storage systems due to their high theoretical capacity of 1672 mAh g^-1 and the cost-effectiveness of naturally abundant aluminum and sulfur. Nevertheless, challenges such as poor cyclic reversibility and limited practical capacity have resulted in only a few reversibly operating Al-S cells to date. In this study, we introduce an improved Al-S battery configuration by incorporating a novel VN@graphene catalyst into the sulfur cathode in Al-S battery applications. Comprehensive electrochemical tests and ex situ characterizations reveal that, during discharge, the catalyst effectively suppresses the polysulfide shuttle effect through strong adsorption, whereas during charging, it

SUBMITTER: Wei Z 

PROVIDER: S-EPMC12835461 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature