Co-doped g-C₃N₄ nanotube decorated separators mediate polysulfide redox for high performance lithium sulfur batteries.

ABSTRACT: The main issue with lithium-sulfur (Li-S) batteries is the serious irreversible capacity loss caused by the polysulfide shuttle process. In this work, we propose an electro-catalytic strategy for absorbing and transferring long-chain polysulfides during the redox process, which is the key to improving the utilization of S. Reported here is a Co doped tubular g-C₃N₄ (CN) modified separator (Co-TCN@PP), which successfully inhibited the polysulfide shuttle by physical absorption and catalysis, thus facilitating the high utilization of S. Co-TCN with a tube-like structure ensures the uniform dispersion of Co nanoparticles, which provides abundant active sites to absorb polysulfides. Furthermore, Co-TCN exhibits fast reaction kinetics for polysulfide conversion. A Li-S bat

SUBMITTER: Fan Z 

PROVIDER: S-EPMC9846446 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature