A Delicately Designed Sulfide Graphdiyne Compatible Cathode for High‐Performance Lithium/Magnesium–Sulfur Batteries. Issue 44 (28th September 2017)

• Record Type: Journal Article
• Authors: Du, Huiping; Zhang, Zhonghua; He, Jianjiang; Cui, Zili; Chai, Jingchao; Ma, Jun; Yang, Ze; Huang, Changshui; Cui, Guanglei
• Is Part Of: Small. Volume 13:Issue 44(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-09-28
• Subjects: high Li+ mobility -- metal–sulfur batteries -- short sulfide unites -- shuttle effect -- sulfide graphdiyne; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201702277
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract: Novel sulfur cathodes hold the key to the development of metal–sulfur batteries, the promising candidate of next‐generation high‐energy‐storage systems. Herein, a fascinating sulfur cathode based on sulfide graphdiyne (SGDY) is designed with a unique structure, which is composed of a conducting carbon skeleton with high Li + mobility and short sulfur energy‐storing unites. The SGDY cathode can essentially avoid polysulfide dissolution and be compatible with commercially available carbonate‐based electrolytes and Grignard reagent‐based electrolytes (all phenyl complex (APC) type electrolytes). Both the assembled Li–S and Mg–S batteries exhibit excellent electrochemical performances including large capacity, superior rate capability, high capacity retention, and high Coulombic efficiency. More importantly, this is the first implementation case of a reliable Mg–S system based on nucleophilic APC electrolytes. Abstract : Shining a light on a novel sulfur cathode for Li–S and Mg–S batteries, a novel sulfur cathode based on sulfide graphdiyne (SGDY) is designed by taking the structure of GDY. Both the assembled Li–S and Mg–S batteries using the SGDY cathode exhibit excellent electrochemical performance, including large capacity, superior rate capability, high capacity retention, and high coulombic efficiency.