Rational Design of TiO₂@g-C₃N₄/CNT Composite Separator for High Performance Lithium-Sulfur Batteries to Promote the Redox Kinetics of Polysulfide.

ABSTRACT: Lithium-sulfur batteries (LSB) show excellent potential as future energy storage devices with high energy density, but their slow redox kinetics and the shuttle effect seriously hinder their commercial application. Herein, a 0D@2D composite was obtained by anchoring polar nano-TiO₂ onto a 2D layered g-C₃N₄ surface in situ, and a functional separator was prepared using multi-walled carbon nanotubes as a conductive substrate. Due to their long-range conductivity, multi-walled carbon nanotubes make up for the low conductivity of TiO₂@g-C₃N₄ to some extent. A lithium-sulfur battery prepared with a modified separator exhibited excellent long-term cycle performance, a good lithium ion diffusion rate, and rapid redox kinetics. The

SUBMITTER: Dong L 

PROVIDER: S-EPMC10745898 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature