Dual-atom pairs with electron buffering enable ultrastable-cycling all-solid-state lithium-sulfur batteries.

ABSTRACT: All-solid-state lithium-sulfur batteries (ASSLSBs) show promise in balancing high energy density and safety, but face the bottleneck of sluggish sulfur conversion kinetics. Single-atom catalysts (SACs) could alleviate this by maximizing active-site utilization and intimate contact with sulfur. However, the metal centers often undergo irreversible electronic reconstruction, causing fast degradation and capacity fading. Here, we report an atomic-scale electron buffering strategy with electronegativity-matched dual-metal atom sites, which strengthen interfacial bonding with sulfur species while maintaining stability. The dual-metal Cu and Ni atoms are anchored on the polymeric carbon nitride (Cu₁Ni₁-PCN) to form spatial proximity (∼3.4 Å) single-atom pairs with similar e

SUBMITTER: Shi J 

PROVIDER: S-EPMC12900420 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature