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Anhydrous LiNbO3 Synthesis and Its Application for Surface Modification of Garnet Type Li-Ion Conductors

Markus Mann, Christian Schwab, Martin Ihrig, Martin Finsterbusch, Manfred Martin, Olivier Guillon, Dina Fattakhova Rohlfing
2022 Journal of the Electrochemical Society  

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In our work we demonstrate a facile, water-free synthesis of amorphous lithium niobate (LiNbO3) layers. Our developed method also enables the coating of substrates in inert atmosphere with simple, industrial scalable methods. As verification, a 120 nm thin LiNbO3 layer was deposited on the garnet type lithium ion conductor Li6.45Al0.05La3Zr1.6Ta0.4O12 (LLZTO) to improve its interface to lithium metal and reduce dendrite formation. The application of the thin film reduced the interface
more » ... between LLZTO and lithium metal to 1.02(13) Ω∙cm2 and increased the critical current density for dendrite formation to at least 0.5 mA/cm2. The chemical stability of the LiNbO3 thin film in contact with Li-metal was verified by SEM, XPS and ToF-SIMS.
doi:10.1149/1945-7111/ac6836 fatcat:onk6rihq7bccno2z3k52b3c4b4
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Markus Mann, Christian Schwab, Martin Ihrig, Martin Finsterbusch, Manfred Martin, Olivier Guillon, Dina Fattakhova Rohlfing. "Anhydrous LiNbO3 Synthesis and Its Application for Surface Modification of Garnet Type Li-Ion Conductors." Journal of the Electrochemical Society (2022)