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June 16, 2023 article Open access Aachen paper

Laboratory X-ray computed tomography imaging protocol allowing the operando investigation of electrode material evolution in various environments

iScience, vol. 26, pp. 107097

DOI: 10.1016/j.isci.2023.107097 Full text (OA) OpenAlex

Abstract

A robust imaging protocol utilizing laboratory XCT is presented. Hybrid 2D/3D imaging at different scales with real-time monitoring allowed to assess, in operation, the evolution of zinc electrodes within three environments, namely alkaline, near-neutral, and mildly acidic. Different combinations of currents were used to demonstrate various scenarios exhibiting both dendritic and smooth deposition of active material. Directly from radiograms, the volume of the electrode and therefore its growth/dissolution rate was estimated and compared against tomographic reconstructions and theoretical values. The protocol combines simplistic cell design with multiple three-dimensional and two-dimensional acquisitions at different magnifications, providing a unique insight into electrode's morphology evolution within various environments.

Authors 6

  1. Krzysztof Dzięcioł corresponding

    Forschungszentrum Jülich

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

  2. Yasin Emre Durmus

    Forschungszentrum Jülich

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

  3. Hermann Tempel

    Forschungszentrum Jülich

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

  4. Hans Kungl

    Forschungszentrum Jülich

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

  5. Alexander Bauer

    Forschungszentrum Jülich

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

  6. Rüdiger‐A. Eichel Aachen Institut für Materialien und Prozesse für elektrochemische Energiespeicher– und wandler

    Forschungszentrum Jülich · RWTH Aachen University

    Affiliation as printed

    Fundamental Electrochemistry (IEK-9), Forschungszentrum Jülich GmbH, Jülich, Germany

    Institut für Materialien und Prozesse für elektrochemische Energiespeicher und wandler, RWTH Aachen University, 52074 Aachen, Germany

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References 60