TY - JOUR
T1 - Encapsulated U-shape lossy mode resonance optical fibre sensor for temperature quantification of lithium-ion batteries
AU - Alcock, Keith M.
AU - Goh, Keng
AU - Beg, Mustehsan
AU - Melendi-Espina, Sonia
AU - Hernaez, Miguel
N1 - 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.
PY - 2025/8/26
Y1 - 2025/8/26
N2 - 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.
AB - 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.
U2 - 10.1016/j.sna.2025.117004
DO - 10.1016/j.sna.2025.117004
M3 - Article
SN - 0924-4247
VL - 395
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
M1 - 117004
ER -
