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

Journal of The Electrochemical Society, vol. 169, pp. 040564

Abstract

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 resistance 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 cm−2. The chemical stability of the LiNbO3 thin film in contact with Li-metal was verified by SEM, XPS and ToF-SIMS.

Authors 7

1. Markus Mann

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany

2. Christian Günter Georg Schwab Aachen Institute of Physical Chemistry

   RWTH Aachen University

   Affiliation as printed

   Institute of Physical Chemistry (IPC), RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany

3. Martin Ihrig

   Forschungszentrum Jülich

   Affiliation as printed

   Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany

4. Martin Finsterbusch corresponding

   Forschungszentrum Jülich · Helmholtz-Institute Münster

   Affiliation as printed

   Helmholtz Institute Münster: Ionics in Energy Storage (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, 48149 Münster, Germany

   Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany

5. Manfred Martin Aachen Institute of Physical Chemistry

   Forschungszentrum Jülich · Helmholtz-Institute Münster · Jülich Aachen Research Alliance · RWTH Aachen University

   Affiliation as printed

   Helmholtz Institute Münster: Ionics in Energy Storage (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, 48149 Münster, Germany

   Institute of Physical Chemistry (IPC), RWTH Aachen University, Landoltweg 2, 52074 Aachen, Germany

   Jülich Aachen Research Alliance, JARA-Energy, 52425, Jülich, Germany

6. Olivier Guillon

   Forschungszentrum Jülich · Helmholtz-Institute Münster · Jülich Aachen Research Alliance

   Affiliation as printed

   Helmholtz Institute Münster: Ionics in Energy Storage (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, 48149 Münster, Germany

   Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany

   Jülich Aachen Research Alliance, JARA-Energy, 52425, Jülich, Germany

7. Dina Fattakhova‐Rohlfing

   Forschungszentrum Jülich · Helmholtz-Institute Münster · Jülich Aachen Research Alliance

   Affiliation as printed

   Helmholtz Institute Münster: Ionics in Energy Storage (IEK-12), Forschungszentrum Jülich GmbH, Corrensstr. 46, 48149 Münster, Germany

   Institute of Energy and Climate Research, Materials Synthesis and Processing (IEK-1), Forschungszentrum Jülich GmbH, Wilhelm-Johnen-Straße, 52425 Jülich, Germany

   Jülich Aachen Research Alliance, JARA-Energy, 52425, Jülich, Germany