Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors

An important aspect of lithium-ion batteries related to lifetime and aging is the change in state within the cells, which results from the expansion of the electrode materials and causes internal stress during operation. In this work, fiber optical sensors by means of Bragg gratings are utilized to...

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Main Authors: Leonard Kropkowski, Tim Oestreich, Fangqi Li, Alexandra Burger, Antonio Nedjalkov, Andreas Würsig, Wolfgang Schade
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Batteries
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Online Access:https://www.mdpi.com/2313-0105/11/6/218
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author Leonard Kropkowski
Tim Oestreich
Fangqi Li
Alexandra Burger
Antonio Nedjalkov
Andreas Würsig
Wolfgang Schade
author_facet Leonard Kropkowski
Tim Oestreich
Fangqi Li
Alexandra Burger
Antonio Nedjalkov
Andreas Würsig
Wolfgang Schade
author_sort Leonard Kropkowski
collection DOAJ
description An important aspect of lithium-ion batteries related to lifetime and aging is the change in state within the cells, which results from the expansion of the electrode materials and causes internal stress during operation. In this work, fiber optical sensors by means of Bragg gratings are utilized to determine the internal strain in the anode material. The collected data were employed to approximate aging-related changes in anode strain using a combination of established methods, such as the differential voltage and incremental capacity analysis. Moreover, additional methodologies are proposed and explored, substituting electrical data with optical strain measurements to quantify degradation effects linked to changes in strain. During the cycling of the cell, changes in the strain behavior have been observed and can be partially attributed to changes in the cell’s electrochemical composition. The methods suggested have proven effective in providing additional insights into the current state of the cells and tracking changes over time due to detected degradation effects.
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institution Kabale University
issn 2313-0105
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publishDate 2025-06-01
publisher MDPI AG
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series Batteries
spelling doaj-art-4701d4c0ad21453bb7c1e595fa7daaad2025-08-20T03:32:27ZengMDPI AGBatteries2313-01052025-06-0111621810.3390/batteries11060218Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating SensorsLeonard Kropkowski0Tim Oestreich1Fangqi Li2Alexandra Burger3Antonio Nedjalkov4Andreas Würsig5Wolfgang Schade6Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Leibnizstraße 4, 38678 Clausthal-Zellerfeld, GermanyDepartment Fiber Optical Sensor Systems, Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut, HHI, Am Stollen 19H, 38640 Goslar, GermanyDepartment Fiber Optical Sensor Systems, Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut, HHI, Am Stollen 19H, 38640 Goslar, GermanyFraunhofer Institute for Silicon Technology ISIT, Fraunhoferstraße 1, 25524 Itzehoe, GermanyDepartment Fiber Optical Sensor Systems, Fraunhofer Institute for Telecommunications, Heinrich-Hertz-Institut, HHI, Am Stollen 19H, 38640 Goslar, GermanyFraunhofer Institute for Silicon Technology ISIT, Fraunhoferstraße 1, 25524 Itzehoe, GermanyInstitute of Energy Research and Physical Technologies, Clausthal University of Technology, Leibnizstraße 4, 38678 Clausthal-Zellerfeld, GermanyAn important aspect of lithium-ion batteries related to lifetime and aging is the change in state within the cells, which results from the expansion of the electrode materials and causes internal stress during operation. In this work, fiber optical sensors by means of Bragg gratings are utilized to determine the internal strain in the anode material. The collected data were employed to approximate aging-related changes in anode strain using a combination of established methods, such as the differential voltage and incremental capacity analysis. Moreover, additional methodologies are proposed and explored, substituting electrical data with optical strain measurements to quantify degradation effects linked to changes in strain. During the cycling of the cell, changes in the strain behavior have been observed and can be partially attributed to changes in the cell’s electrochemical composition. The methods suggested have proven effective in providing additional insights into the current state of the cells and tracking changes over time due to detected degradation effects.https://www.mdpi.com/2313-0105/11/6/218lithium-ion batteryinternal strainagingfiber Bragg gratingsdifferential voltage analysisincremental capacity analysis
spellingShingle Leonard Kropkowski
Tim Oestreich
Fangqi Li
Alexandra Burger
Antonio Nedjalkov
Andreas Würsig
Wolfgang Schade
Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
Batteries
lithium-ion battery
internal strain
aging
fiber Bragg gratings
differential voltage analysis
incremental capacity analysis
title Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
title_full Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
title_fullStr Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
title_full_unstemmed Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
title_short Quantification of Degradation Processes in Lithium-Ion Batteries Through Internal Strain Measurement with Fiber Bragg Grating Sensors
title_sort quantification of degradation processes in lithium ion batteries through internal strain measurement with fiber bragg grating sensors
topic lithium-ion battery
internal strain
aging
fiber Bragg gratings
differential voltage analysis
incremental capacity analysis
url https://www.mdpi.com/2313-0105/11/6/218
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