Imaging Sodium Dendrite Growth in All‐Solid‐State Sodium Batteries using 23Na T2‐weighted MRI

Rees, Gregory J; Spencer Jolly, Dominic; Ning, Ziyang; Marrow, T James; Pavlovskaya, Galina; Bruce, Peter G.

Abstract

Two‐dimensional, Knight‐shifted, T2‐contrasted 23Na magnetic resonance imaging of an all‐solid‐state cell with Na electrode and a ceramic electrolyte is employed to directly observe Na microstructural growth. A spalling dendritic morphology is observed and confirmed by more conventional post‐mortem analysis; X‐ray tomography and scanning electron microscopy. A significantly greater 23Na T2 for the dendritic growth, compared with the bulk metal electrode, is attributed to increased sodium ion mobility in the dendrite. 23Na T2‐contrast MRI of metallic sodium offers a clear, routine method for observing and isolating microstructural growths and can supplement the current suite of techniques utilised to analyse dendritic growth in all‐solid‐state cells.

Citation

Rees, G. J., Spencer Jolly, D., Ning, Z., Marrow, T. J., Pavlovskaya, G., & Bruce, P. G. (2021). Imaging Sodium Dendrite Growth in All‐Solid‐State Sodium Batteries using 23Na T2‐weighted MRI. Angewandte Chemie, 133(4), 2138-2143. https://doi.org/10.1002/ange.202013066

• Journal Article Type: Article
• Acceptance Date: Oct 2, 2020
• Online Publication Date: Nov 24, 2020
• Publication Date: Jan 25, 2021
• Deposit Date: Oct 7, 2020
• Publicly Available Date: Nov 25, 2021
• Journal: Angewandte Chemie
• Print ISSN: 0044-8249
• Electronic ISSN: 1521-3757
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 133
• Issue: 4
• Pages: 2138-2143
• DOI: https://doi.org/10.1002/ange.202013066
• Keywords: Sodium magnetic resonance imaging, T2-weighted MRI, microscopy
• Public URL: https://nottingham-repository.worktribe.com/output/4944450
• Publisher URL: https://onlinelibrary.wiley.com/doi/10.1002/anie.202013066