Home > Publications database > Waste minimization in all-solid-state battery production via re-lithiation of the garnet solid electrolyte LLZO > print

001     1028951
005     20250204113912.0
024 7 _ |a 10.1016/j.jpowsour.2024.234709
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024 7 _ |a 1873-2755
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024 7 _ |a 10.34734/FZJ-2024-04891
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100 1 _ |a Kiyek, Vivien
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245 _ _ |a Waste minimization in all-solid-state battery production via re-lithiation of the garnet solid electrolyte LLZO
260 _ _ |a New York, NY [u.a.]
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520 _ _ |a Oxide-ceramic based electrolytes such as Li7La3Zr2O12 (LLZO), are one of the most promising solid electrolytes for application in all-solid-state batteries. However, most of its constituents are listed as critical raw materials, highlighting the need to minimize waste during synthesis and processing. Therefore, we investigated the re-use of aged LLZO powder and aged LLZO green foils produced by tape-casting, an industrial processing route suitable for ASSBs. We established a new synthesis route to fully recovery Li-poor LLZO and pyrochlore phase La2Zr2O7 by simply adding a Li source during firing. By using recycled LLZO powder in a <200 μm thick cast tape, we were able to prove a similar ionic conductivity of 2.1 × 10−4 S cm−1 at room temperature and a critical current density of 0.75 mA cm−2 at 60 °C compared to fresh powder. This simple and efficient re-synthesis strategy might hold the potential to minimize waste streams of critical raw materials in future industrial production processes of solid-state batteries.
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700 1 _ |a Hilger, Martin
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700 1 _ |a Rosen, Melanie
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700 1 _ |a Gross, Jürgen Peter
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700 1 _ |a Mann, Markus
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700 1 _ |a Fattakhova-Rohlfing, Dina
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700 1 _ |a Schwaiger, Ruth
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700 1 _ |a Finsterbusch, Martin
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700 1 _ |a Guillon, Olivier
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773 _ _ |a 10.1016/j.jpowsour.2024.234709
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