Among the different cutting-edge solutions currently under investigation, lithium metal technologies have received a renewed interest. Thorough research work is currently carried out to enhance the safety and cyclability of the lithium metal electrode, targeting high energy post-Li-ion systems such as the lithium/sulfur technology. This study aims at investigating different inorganic protective layers that could be placed at the surface of the lithium metal electrode in a lithium/sulfur system, in order to prevent the detrimental interactions with polysulfide species and electrolyte components. The chemical stability of the selected inorganic materials (amorphous thin films, crystalline ceramics and glass-ceramics) towards ether-based (polysulfides-containing) electrolytes was studied. Although being crucial for long term cycling of Li/S cells, this issue has not been addressed so far. The chemical composition and morphology of the different materials after immersion in different electrolytes were characterized by X-ray diffraction, XPS and SEM, and the most promising materials were evaluated in Li/S cells.

在目前正在研究的各种最先进的解决方案中，锂金属技术引起了人们的新兴趣。目前，针对诸如锂/硫技术之类的高能后锂离子系统，已经进行了充分的研究工作以增强锂金属电极的安全性和可循环性。这项研究旨在研究可以放置在锂/硫系统中锂金属电极表面的不同无机保护层，以防止与多硫化物物种和电解质组分的有害相互作用。研究了选定的无机材料（非晶薄膜，结晶陶瓷和玻璃陶瓷）对醚基（含多硫化物）电解质的化学稳定性。尽管对于Li / S电池的长期循环至关重要，到目前为止，尚未解决此问题。通过X射线衍射，XPS和SEM表征了浸入不同电解质中的不同材料的化学组成和形态，并在Li / S电池中评估了最有希望的材料。