Michael A. Hope
Selective NMR observation of the SEI–metal interface by dynamic nuclear polarisation from lithium metal
Hope, Michael A.; Rinkel, Bernardine L. D.; Gunnarsdóttir, Anna B.; Märker, Katharina; Menkin, Svetlana; Paul, Subhradip; Sergeyev, Ivan V.; Grey, Clare P.
Authors
Bernardine L. D. Rinkel
Anna B. Gunnarsdóttir
Katharina Märker
Svetlana Menkin
Subhradip Paul
Ivan V. Sergeyev
Clare P. Grey
Abstract
While lithium metal represents the ultimate high-energy-density battery anode material, its use is limited by dendrite formation and associated safety risks, motivating studies of the solid–electrolyte interphase layer that forms on the lithium, which is key in controlling lithium metal deposition. Dynamic nuclear polarisation enhanced NMR can provide important structural information; however, typical exogenous dynamic nuclear polarisation experiments, in which organic radicals are added to the sample, require cryogenic sample cooling and are not selective for the interface between the metal and the solid–electrolyte interphase. Here we instead exploit the conduction electrons of lithium metal to achieve an order of magnitude hyperpolarisation at room temperature. We enhance the 7Li, 1H and 19F NMR spectra of solid–electrolyte interphase species selectively, revealing their chemical nature and spatial distribution. These experiments pave the way for more ambitious room temperature in situ dynamic nuclear polarisation studies of batteries and the selective enhancement of metal–solid interfaces in a wider range of systems.
Citation
Hope, M. A., Rinkel, B. L. D., Gunnarsdóttir, A. B., Märker, K., Menkin, S., Paul, S., …Grey, C. P. (2020). Selective NMR observation of the SEI–metal interface by dynamic nuclear polarisation from lithium metal. Nature Communications, 11(1), Article 2224. https://doi.org/10.1038/s41467-020-16114-x
Journal Article Type | Article |
---|---|
Acceptance Date | Apr 9, 2020 |
Online Publication Date | May 6, 2020 |
Publication Date | May 6, 2020 |
Deposit Date | May 11, 2020 |
Publicly Available Date | Mar 29, 2024 |
Journal | Nature Communications |
Publisher | Nature Publishing Group |
Peer Reviewed | Peer Reviewed |
Volume | 11 |
Issue | 1 |
Article Number | 2224 |
DOI | https://doi.org/10.1038/s41467-020-16114-x |
Keywords | General Physics and Astronomy; General Chemistry; Energy Materials; DNP; hyperpolarisation |
Public URL | https://nottingham-repository.worktribe.com/output/4395659 |
Publisher URL | http://www.nature.com/articles/s41467-020-16114-x |
Additional Information | Received: 25 February 2020; Accepted: 9 April 2020; First Online: 6 May 2020; : I.V.S. is an employee of Bruker Biospin Corporation. Bruker Biospin manufactures and sells DNP instrumentation. |
Files
s41467-020-16114-x
(1.5 Mb)
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Publisher Licence URL
https://creativecommons.org/licenses/by/4.0/
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