Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 16, Issue 40, Pages 22273-22280Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp02878c
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A novel combination of in operando X-ray tomography and model-based analysis of zinc air batteries is introduced. Using this approach the correlation between the three-dimensional morphological properties of the electrode - on the one hand - and the electrochemical properties of the battery on the other hand is revealed. In detail, chemical dissolution of zinc particles and the electrode volume were investigated non-destructively during battery operation by X-ray tomography (applying a spatial resolution of 9 mu m), while simulation yielded cell potentials of each electrode and allows for the prediction of long-term operation behavior. Furthermore, the analysis of individual zinc particles revealed an electrochemical dissolution process that can be explained using an adapted shrinking-core model.
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