Interface Instability of Fe-Stabilized Li7La3Zr2O12 versus Li Metal

Daniel Rettenwander1,2, Reinhard Wagner3, Andreas Reyer3

  • 1Institute for Chemistry and Technology of Materials, Graz University of Technology, Graz, Austria.

Summary

Interface instability between lithium metal and cubic lithium lanthanum zirconium oxide (LLZO:Fe) ceramic electrolytes hinders all-solid-state battery development. A thick tetragonal LLZO interlayer forms, causing high impedance and limiting device performance.

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