Ni-CeO₂ Heterostructures in Li-S Batteries: A Balancing Act between Adsorption and Catalytic Conversion of Polysulfide.

ABSTRACT: Lithium-sulfur (Li-S) batteries have attracted considerable attention over the last two decades because of a high energy density and low cost. However, the wide application of Li-S batteries has been severely impeded due to the poor electrical conductivity of S, shuttling effect of soluble lithium polysulfides (LiPSs), and sluggish redox kinetics of S species, especially under high S loading. To address all these issues, a Ni-CeO₂ heterostructure-doped carbon nanofiber (Ni-CeO₂ -CNF) is developed as an S host that combines the strong adsorption with the high catalytic activity and the good electrical conductivity, where the LiPSs anchored on the heterostructure surface can directly gain electrons from the current collector and realize a fast conversion between S₈

SUBMITTER: Kong Y 

PROVIDER: S-EPMC9189638 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature