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Fiber Optic Sensors for Detection of Sodium Plating in Sodium-Ion Batteries
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0001-7246-1680
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0003-2538-8104
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0002-3598-3903
2022 (English)In: ACS Applied Energy Materials, E-ISSN 2574-0962, Vol. 5, no 5, p. 6219-6227Article in journal (Refereed) Published
Abstract [en]

Optical fiber sensors integrated into sodium-ion batteries could provide a battery management system (BMS) with information to identify early warning signs of plating, preventing catastrophic failure and maintaining safe operation during fast charging. This work shows the possibility of directly detecting plating of sodium metal in electrochemical cells by means of operando fiber optic evanescent wave (FOEW) spectroscopy. The results include measurements with FOEW sensors on bare copper substrates as well as on hard carbon anodes during operation in both half- and full-cell configurations. Full cells using hard carbon anodes and Prussian white cathodes with high areal capacities (>1.5 mAh cm(-2)) and integrated FOEW sensors are shown to cycle well in pouch cells. The results also include measurements to demonstrate plating on hard carbon during sodiation at different rates.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2022. Vol. 5, no 5, p. 6219-6227
Keywords [en]
evanescent waves, fiber optic sensors, hard carbon, Prussian white, sodium-ion batteries, sodium plating
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-482026DOI: 10.1021/acsaem.2c00595ISI: 000823412100001OAI: oai:DiVA.org:uu-482026DiVA, id: diva2:1688789
Funder
Vinnova, 2019-00064StandUpAvailable from: 2022-08-19 Created: 2022-08-19 Last updated: 2022-12-08Bibliographically approved

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Hedman, JonasMogensen, RonnieYounesi, RezaBjörefors, Fredrik

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