Direct Detection of Lithium Exchange across the Solid Electrolyte Interphase by Li-7 Chemical Exchange Saturation Transfer

Columbus D, Arunachalam V, Glang F, Avram L, Haber S, Zohar A, Zaiß M, Leskes M (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Journal of the American Chemical Society American Chemical Society

Book Volume: 144

Pages Range: 9836-9844

Journal Issue: 22

DOI: 10.1021/jacs.2c02494

Abstract

Lithium metal anodes offer a huge leap in the energy density of batteries, yet their implementation is limited by solid electrolyte interphase (SEI) formation and dendrite deposition. A key challenge in developing electrolytes leading to the SEI with beneficial properties is the lack of experimental approaches for directly probing the ionic permeability of the SEI. Here, we introduce lithium chemical exchange saturation transfer (Li-CEST) as an efficient nuclear magnetic resonance (NMR) approach for detecting the otherwise invisible process of Li exchange across the metal-SEI interface. In Li-CEST, the properties of the undetectable SEI are encoded in the NMR signal of the metal resonance through their exchange process. We benefit from the high surface area of lithium dendrites and are able, for the first time, to detect exchange across solid phases through CEST. Analytical Bloch-McConnell models allow us to compare the SEI permeability formed in different electrolytes, making the presented Li-CEST approach a powerful tool for designing electrolytes for metal-based batteries.

Authors with CRIS profile

Moritz Zaiß Professur für Multimodale Bildgebung in der klinischen Forschung

Involved external institutions

Weizmann Institute of Science IL Israel (IL) Max-Planck-Institut für biologische Kybernetik / Max Planck Institute for Biological Cybernetics DE Germany (DE)

How to cite

APA:

Columbus, D., Arunachalam, V., Glang, F., Avram, L., Haber, S., Zohar, A.,... Leskes, M. (2022). Direct Detection of Lithium Exchange across the Solid Electrolyte Interphase by Li-7 Chemical Exchange Saturation Transfer. Journal of the American Chemical Society, 144(22), 9836-9844. https://doi.org/10.1021/jacs.2c02494

MLA:

Columbus, David, et al. "Direct Detection of Lithium Exchange across the Solid Electrolyte Interphase by Li-7 Chemical Exchange Saturation Transfer." Journal of the American Chemical Society 144.22 (2022): 9836-9844.

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