Encapsulated U-shape lossy mode resonance optical fibre sensor for temperature quantification of lithium-ion batteries

Alcock, Keith M., Goh, Keng, Beg, Mustehsan, Melendi-Espina, Sonia and Hernaez, Miguel (2025) Encapsulated U-shape lossy mode resonance optical fibre sensor for temperature quantification of lithium-ion batteries. Sensors and Actuators A: Physical, 395. ISSN 0924-4247

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Abstract

Accurate measurement of essential operational parameters in electrochemical energy storage devices is vital for ensuring reliable and long-lasting performance in a circular economy. This study presents the first use of a Lossy Mode Resonance (LMR) optical fibre sensor to measure the temperature of lithium-ion batteries, which is a highly influential aspect of their degradation. This technique enables an effective and simple application of optical fibre sensors for energy storage devices. The design involves using a U-shaped fibre to accurately detect changes in absorption, rather than changes in wavelength. Additionally, it incorporates a thin-film of graphene oxide and polyethyleneimine to induce the LMR which is enclosed within polydimethylsiloxane which alters refractive index with temperature. The total sensitivity reached is -0.0072 A.U./°C and -0.39 nm/°C, with excellent linearity values of R² 0.98 and R² 0.99 for the 2 C and 2.5 C discharge rates, respectively. This work emphasises the affordable, accurate, and innovative use of LMR sensors, which encourages the advancement and utilisation of these sensors in electrochemical energy storage systems.

Item Type:	Article
Additional Information:	Data availability: Data will be made available on request. Acknowledgement: This work received partial support from the School of Computing, Engineering, and the Built Environment at Edinburgh Napier University through Grant N480-000. Additionally, KMA would like to express gratitude to the Faculty of Science at the University of East Anglia for providing a scholarship (Ref:100383124) that enabled the completion of this study.
Uncontrolled Keywords:	sdg 7 - affordable and clean energy,sdg 8 - decent work and economic growth,sdg 12 - responsible consumption and production ,/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy
Faculty \ School:	Faculty of Science > School of Engineering, Mathematics and Physics
UEA Research Groups:	Faculty of Science > Research Groups > Sustainable Energy Faculty of Science > Research Groups > Materials, Manufacturing & Process Modelling Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Related URLs:	https://linkinghub.elsevier.com/retrieve...
Depositing User:	LivePure Connector
Date Deposited:	27 Aug 2025 09:30
Last Modified:	29 Oct 2025 00:59
URI:	https://ueaeprints.uea.ac.uk/id/eprint/100244
DOI:	10.1016/j.sna.2025.117004

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