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| Home > Publications database > Li$_{7}$La$_{3}$Zr$_{2}$O$_{12}$ electrolyte for all-solid-state batteries |
| Home > Publications database > Li$_{7}$La$_{3}$Zr$_{2}$O$_{12}$ electrolyte for all-solid-state batteries |
| Poster | FZJ-2014-05448 |
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2014
Please use a persistent id in citations: http://hdl.handle.net/2128/8060
Abstract: A major drawback of conventional Li-ion batteries is the use of organic liquid electrolytes. As an alternative, batteries with solid lithium conducting electrolytes are investigated. One of the promising oxide materials is the garnet-structured Li7La3Zr2O12 (LLZ) with a competitive Li-ion conductivity of about 10-4 S/cm. Furthermore, the material has a good thermal stability (up to 1250°C), is chemical compatible to metallic lithium, and electrochemically usable up to 8V vs. Li/Li+. The structural stability and ion conduction performance can be improved by partial substitution (e.g. Al, Ta, Y). Furthermore, the sintering temperature, required to achieve the high conductive cubic phase, is reduced by doping. An additional approach is to reduce the thickness of the electrolyte layer to increase battery performance. At IEK1, we investigate two main approaches for solid state electrolyte fabrication. Very thin layers are synthesized by PVD. The aim is to achieve a thin film battery in the range of a few micrometers. For large scale fabrication of functional layers tape casting of LLZ is investigated.
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