Dual synergistic effects assisting Cu-SeS₂ electrochemistry for energy storage.

ABSTRACT: Selenium sulfide (SeS₂) features higher electronic conductivity than sulfur and higher theoretical capacity and lower cost than selenium, attracting considerable interest in energy storage field. Although nonaqueous Li/Na/K-SeS₂ batteries are attractive for their high energy density, the notorious shuttle effect of polysulfides/polyselenides and the intrinsic limitations of organic electrolyte have hindered the deployment of this technology. To circumvent these issues, here we design an aqueous Cu-SeS₂ battery by encapsulating SeS₂ in a defect-enriched nitrogen-doped porous carbon monolith. Except the intrinsic synergistic effect between Se and S in SeS₂, the porous structure of carbon matrix has sufficient internal voids to buffer the

SUBMITTER: Zhang J 

PROVIDER: S-EPMC10068761 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature