Chlorine bridge bond-enabled binuclear copper complex for electrocatalyzing lithium–sulfur reactions

Qin Yang, Jinyan Cai, Guanwu Li, Runhua Gao, Zhiyuan Han, Jingjing Han, Dong Liu, Lixian Song, Zixiong Shi, Dong Wang, Gongming Wang (), Weitao Zheng, Guangmin Zhou () and Yingze Song ()
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Qin Yang: Southwest University of Science and Technology
Jinyan Cai: University of Science and Technology of China
Guanwu Li: Jilin University
Runhua Gao: Tsinghua University Shenzhen
Zhiyuan Han: Tsinghua University Shenzhen
Jingjing Han: China Academy of Engineering Physics
Dong Liu: China Academy of Engineering Physics
Lixian Song: Southwest University of Science and Technology
Zixiong Shi: King Abdullah University of Science and Technology (KAUST)
Dong Wang: Jilin University
Gongming Wang: University of Science and Technology of China
Weitao Zheng: Jilin University
Guangmin Zhou: Tsinghua University Shenzhen
Yingze Song: Southwest University of Science and Technology

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: 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−2 is achieved under the scenario of sulfur content of 60 wt.%, mass loading of 7.7 mg cm−2 and electrolyte dosage of 4.8 μL mg−1.

Date: 2024
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DOI: 10.1038/s41467-024-47565-1

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