New Solid Electrolytes and "All-Solid-State" Lithium Batteries

60年代末，S对锂离子导电固体进行了大量的研究，寻找可能用作二次电池电解液的锂离子导电固体。由于在有机或聚合物电解液中获得了重要的导电性改善，因此对陶瓷的研究较少。然而，随着今天锂硫电池、锂空气电池或全固态电池等新系统的发展，新的固体离子导体的发现势必要超越这些技术的一些限制。由于化学不相容，特别是当涉及锂金属时，必须使用高导电性的膜来物理地分隔电池的两侧(正负电极)。该计划旨在研究新的锂离子固体电解质，从合成到完全表征，并考虑将其整合到“全固态”锂电池的开发中。这一研究领域被美国能源部高级研究计划局确认为主要优先事项之一，该机构在过去3年中批准了几个相关项目。虽然大多数研究考虑的是对现有材料的改进，但本研究计划将重点放在用不同的原创方法研究新材料上，这些方法在许多领域都被证明是有效的，但对电池材料来说还不是。

In the late 60’s, a vast study was undertaken in search of Li+ ion conducting solids with potential use as electrolytes in rechargeable batteries. With the important conductivity improvements obtained in organic or polymer electrolytes, ceramics were then less investigated. However, with today’s development of new systems like Li sulphur, Li-air or “all-solid-state” batteries, the discovery of new solid ionic conductors are mandatory to overpass some limitations of these technologies. The use of highly conductive membranes is necessary to physically separate the two sides of the cell (positive and negative electrode) due to chemical incompatibilities, especially when Li metal is involved. The proposed program aims to investigate new Li+ ion solid electrolytes, going from the synthesis to their complete characterization, and to consider their integration in the development of “all-solid-state” lithium batteries. This research area is recognized as one of the major priorities by the US DOE’s Advanced Research Projects Agency-Energy, which granted several related projects these last 3 years. While most of the investigations consider improvements of already existing materials, this research program will focus on the research of new materials by different original methodologies, which have proved to be effective in many fields but not yet for battery materials.