Hierarchical Carbon Interlayer Design as Interfacial Stabilizer and Solid-Electrolyte Infiltrate for High-Performance Solid-State Li-S Batteries.

A great deal of attention has been paid to lithium-sulfur (Li-S) batteries due to their high energy density (>2600 Wh kg), elemental abundance, and environmental friendliness, which show great application prospects in a wide range of energy storage systems. However, the shuttle effect caused by traditional liquid electrolyte remains a problem handicapping the development of the Li-S battery. polymerized gel polymer electrolytes (GPEs) with high ionic conductivity, high-voltage stability, and interfacial compatibility are spotlighted to solve the shuttle effect for better electrochemical performance.

Stable Solid Electrolyte Interphase In Situ Formed on Magnesium-Metal Anode by using a Perfluorinated Alkoxide-Based All-Magnesium Salt Electrolyte.

Passivation of the Mg anode surface in conventional electrolytes constitutes a critical issue for practical Mg batteries. In this work, a perfluorinated tert-butoxide magnesium salt, Mg(pftb) , is codissolved with MgCl in tetrahydrofuran (THF) to form an all-magnesium salt electrolyte. Raman spectroscopy and density function theory calculation confirm that [Mg Cl ·6THF] [Mg(pftb) ] is the main electrochemically active species of the electrolyte.