Chlorine bridge bond-enabled binuclear copper complex for electrocatalyzing lithium-sulfur reactions.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38622167.
- Also identified by DOI 10.1038/s41467-024-47565-1 and PMC identifier 11018799.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Engineering atom-scale sites are crucial to the mitigation of polysulfide shuttle, promotion of sulfur redox, and regulation of lithium deposition in lithium-sulfur batteries. Herein, a homonuclear copper dual-atom catalyst with a proximal distance of 3.5 Å is developed for lithium-sulfur batteries, wherein two adjacent copper atoms are linked by a pair of symmetrical chlorine bridge bonds. Benefiting from the proximal copper atoms and their unique coordination, the copper dual-atom catalyst with the increased active interface concentration synchronously guide the evolutions of sulfur and lithium species. Such a delicate design breaks through the activity limitation of mononuclear metal center and represents a catalyst concept for lithium-sulfur battery realm. Therefore, a remarkable areal capacity of 7.8 mA h cm<sup>-2</sup> is achieved under the scenario of sulfur content of 60 wt.%, mass loading of 7.7 mg cm<sup>-2</sup> and electrolyte dosage of 4.8 μL mg<sup>-1</sup>.