Correlative Electron Paramagnetic Resonance Imaging and Atomic Force Microscopy of Lithium Deposited on Copper

ChemPhysChem, vol. 26, pp. e202400937

Abstract

Anode free concepts are gaining traction in battery research. To improve cyclability, a better understanding of the deposition processes and morphologies is necessary. Correlative experiments enable a link between a variety of properties obtained, such as chemical, mechanical or electrochemical data. Here, electron paramagnetic resonance imaging (EPRI) is correlated with atomic force microscopy (AFM) to gain a deeper understanding of the microscopic topography and local stiffness at different intensities of the lithium selective EPRI map. Experiments were carried out on a sample of lithium deposited on copper foil from standard battery electrolyte. The correlation of both methods reveals that EPRI has a high sensitivity towards small lithium structures, while bulk lithium was not detected. The results demonstrate that EPRI can be used for prescreening to identify regions with different properties, which can then be analysed individually by AFM.

Authors 6

1. Beatrice Wolff Aachen

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   RWTH Aachen University Institute of Physical Chemistry 52074 Aachen Germany

   Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH Institute of Energy Technologies, IET-1 GERMANY

2. Christian Hellenbrandt

   Forschungszentrum Jülich

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH Institute of Energy Technologies, IET-1 GERMANY

3. Peter Jakes

   Forschungszentrum Jülich

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH Institute of Energy Technologies, IET-1 GERMANY

4. Rüdiger‐A. Eichel Aachen

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   RWTH Aachen University Institute of Physical Chemistry 52074 Aachen Germany

   Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH Institute of Energy Technologies, IET-1 GERMANY

5. Josef Granwehr Aachen

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   RWTH Aachen University Institute of Technical and Macromolecular Chemistry 52074 Aachen Germany

   Forschungszentrum Jülich GmbH: Forschungszentrum Julich GmbH Institute of Energy Technologies, IET-1 GERMANY

6. Florian Hausen corresponding Aachen

   Forschungszentrum Jülich · RWTH Aachen University

   Affiliation as printed

   Forschungszentrum Jülich GmbH Institute of Energy Technologies, IET-1 52425 Jülich Germany

   RWTH Aachen University Institute of Physical Chemistry 52074 Aachen Germany

   Forschungszentrum Julich GmbH, Institute of Energy and Climate Research, IEK-9, Wilhelm-Johnen-Str, Julich, GERMANY