The author of 《Anode interfacial layer formation via reductive ethyl detaching of organic iodide in lithium-oxygen batteries》 were Zhang, Xiao-Ping; Sun, Yi-Yang; Sun, Zhuang; Yang, Chu-Shu; Zhang, Tao. And the article was published in Nature Communications in 2019. Electric Literature of C3H9IOS The author mentioned the following in the article:
As soluble catalysts, redox mediators can reduce the high charging overpotential of lithium-oxygen batteries by providing sufficient liquid-solid interface for lithium peroxide decomposition However, the redox mediators usually introduce undesirable reactions. In particular, the so-called “”shuttle effect”” leads to the loss of both the redox mediators and elec. energy efficiency. In this study, an organic compound, triethylsulfonium iodide, is found to act bifunctionally as both a redox mediator and a solid electrolyte interphase-forming agent for lithium-oxygen batteries. During charging, the organic iodide exhibits comparable lithium peroxide-oxidizing capability with inorganic iodides. Meanwhile, it in situ generates an interfacial layer on lithium anode via reductive Et detaching and the subsequent oxidation This layer prevents the lithium anode from reacting with the redox mediators and allows efficient lithium-ion transfer leading to dendrite-free lithium anode. Significantly improved cycling performance has been achieved by the bifunctional organic iodide redox mediator. In the part of experimental materials, we found many familiar compounds, such as Trimethylsulfoxonium iodide(cas: 1774-47-6Electric Literature of C3H9IOS)
Trimethylsulfoxonium iodide(cas: 1774-47-6) reacts with sodium hydride to prepare dimethyloxosulfonium methylide, which is used as a methylene-transfer reagent in synthetic chemistry. It is used to prepare ylide, which reacts with carbonyl compounds to get epoxides. Further, it reacts with alfa,beta-unsaturated esters to get cyclopropyl esters.Electric Literature of C3H9IOS
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com