Orbital electron coupling of Ga-Cd dual-atom sites catalyzes sulfur redox in potassium-sulfur battery.

ABSTRACT: Dual-atom catalysts are a class of important catalytic systems for accelerating the kinetics of solid-phase conversion of K₂S₂ to K₂S in potassium-sulfur battery cathodes, yet their uncontrolled metal-metal interactions greatly limit their catalytic capability, leading to low conversion efficiency of potassium-sulfur batteries. Herein, we report the precise synthesis of Ga-Cd dual-atom catalysts with strong orbital electron coupling of p-block Ga and d-block Cd, anchored on hollow mesoporous carbon spheres (Ga-Cd DAs-HMCS) for boosting the performance of potassium-sulfur batteries. Ga shows strong adsorption capacity for potassium polysulfides, but lacks sufficient valence electrons to promote their conversion. We demonstrate that the introduction of Cd wit

SUBMITTER: Zhang S 

PROVIDER: S-EPMC12484955 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature