Heteroatoms Synergistic Anchoring Vacancies in Phosphorus-Doped CoSe₂ Enable Ultrahigh Activity and Stability in Li-S Batteries.

ABSTRACT: Electrocatalyst activity and stability demonstrate a "seesaw" relationship. Introducing vacancies (Vo) enhances the activity by improving reactant affinity and increasing accessible active sites. However, deficient or excessive Vo reduces polysulfide adsorption and lowers catalytic stability. Herein, a novel "heteroatoms synergistic anchoring vacancies" strategy is proposed to address the trade-off between high activity and stability. Phosphorus-doped CoSe₂ with remained rich selenium vacancies (P-CS-Vo-0.5) was synthesized by producing abundant selenium Vo followed by controlled P atom doping. Atomic-scale microstructure analysis elucidated a dynamic process of surface vacancy generation and the subsequent partial occupation of these vacancies by P atoms. Density functional the

SUBMITTER: Zhou X 

PROVIDER: S-EPMC12185838 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature