Coordinatively Unsaturated Co Single-Atom Catalysts Enhance the Performance of Lithium–Sulfur Batteries by Triggering Strong d–p Orbital Hybridization

or CMPs that are devoid of Co SACs. This work reveals how the catalytic activity displayed by SACs is affected by their coordination structures, and the rules that underpin the structure-activity relationship may be extended to designing electrocatalysts for use in other applications.