Journal Article

FZJ-2023-03080

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Laboratory XCT Imaging Protocol Allowing Operando Investigation of Electrode Material Evolution in Various Environments

Dzieciol, K.FZJ* ; Durmus, Y. E.FZJ* ; Tempel, H.FZJ* ; Kungl, H.FZJ* ; Bauer, A.FZJ* ; Eichel, R.-A.FZJ*RWTH*

2023
Elsevier St. Louis

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Please use a persistent id in citations: doi:10.1016/j.isci.2023.107097  doi:10.2139/ssrn.4366144  doi:10.34734/FZJ-2023-03080

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.

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 1223 - Batteries in Application (POF4-122) (POF4-122)

Appears in the scientific report 2023

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