The Cover Feature illustrates that optimization on all length scales is necessary for the successful development of all‐solid‐state‐batteries. The image shows important stages in the development of solid electrolytes: the nano‐sized powder, the micron‐sized dense microstructure of a membrane, the millimeter and centimeter‐sized sheets of solid electrolytes and their integration into batteries. Maintaining the high ionic conductivity of the available sodium ion conductors, from the powder to the cell and from the lab to the factory, is a big challenge towards practical application. More information can be found in the Review by Q. Ma and F. Tietz.

中文翻译：

---

封面文章：用于钠电池的固态电解质材料：走向实际应用（ChemElectroChem 13/2020）

封面功能说明，要成功开发所有固态电池，必须对所有长度进行优化。该图显示了固体电解质发展的重要阶段：纳米级粉末，膜的微米级致密微观结构，毫米级和厘米级固体电解质片及其整合到电池中。从粉末到电解池以及从实验室到工厂，要保持现有钠离子导体的高离子电导率是实际应用面临的巨大挑战。有关更多信息，请参见Q. Ma和F. Tietz的评论。