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All-Solid-State Batteries

The schematic shows the cross-section of a solid-state battery cell consisting of a cylinder filled with colored spheres. Bottom Layer: A thin, solid grey disc represents the anode. Middle Section: A dense layer of small yellow spheres represents the solid electrolyte. Top Section: A mixture of larger blue spheres (cathode active material) and yellow spheres (solid electrolyte) fills the upper half
Figure: Vanessa Miß.
Figure 1: Schematic all-solid-state battery.

Li-based all-solid-state batteries (ASSB) are a promising and thus intensively studied battery concept, since it offers the opportunity to attain higher energy densities than boasted by commercial liquid electrolyte-based Li-ion batteries nowadays. In the long run, these batteries are expected to enable the utilization of elementary lithium as anode material. Furthermore, they can also be considered as safer than the current liquid cells since – being purely solid in nature – the risk of battery leakage vanishes and also the flammability of the solid electrolyte is much less pronounced as compared to liquid electrolytes.

In our working group, we focus on the components and characterization of all-solid-state batteries. We are also investigating a special type of ASSBs, the anode-free solid-state battery.