In-situ obtained internal strain and pressure of the cylindrical Li-ion battery cell with silicon-graphite negative electrodes

Zhu, Shengxin; Yang, Le; Fan, Jinbao; Wen, Jiawei; Feng, Xiaolong; Zhou, Peijun; Xie, Fuguo; Zhou, Jiang; Wang, Yana

doi:10.1016/j.est.2021.103049

Cited by 21 publications

(10 citation statements)

References 31 publications

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“…The development of techniques for detecting intercalation strain and cell pressure is crucial. [55][56][57] Early on, in situ strain gauges were widely used in various commercial battery applications to detect volume changes. The Dahn group has demonstrated that irreversible volume growth due to solid electrolyte film (SEI) growth can be detected by simply employing an external sensor.…”

Section: Pressure and Strain Sensorsmentioning

confidence: 99%

Smart batteries enabled by implanted flexible sensors

Lü

Wang

Mao

et al. 2023

Energy Environ. Sci.

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Section: Pressure and Strain Sensorsmentioning

confidence: 99%

Smart batteries enabled by implanted flexible sensors

Lü

Wang

Mao

et al. 2023

Energy Environ. Sci.

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“…As for the pouch cell or prismatic cell, the traction force on the electrode is not homogeneous which has been pointed out in the previous research. [22][23][24] As for coin cell, since the area of the electrode is relatively small and the spacer is used for compression of the electrode, the traction force can be assumed as homogeneous in this case. In this study, we are focusing on the electrode in the scale of coin cell or a small part of the electrode in the pouch cell or prismatic cell in which the traction force is homogenous.…”

Section: Derivation Of the Electrochemo-mechanical Impedance Model Fo...mentioning

confidence: 99%

A Modeling Framework of Electrochemo-mechanics of Lithium-ion Battery: Part II. Porous Electrodes with Contact Stress Effect

Fang¹,

Li²

2022

J. Electrochem. Soc.

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Extended from the electrochemo-mechanical single particle model, an electrochemo-mechanical impedance model for porous electrode in LIB, which considers the effect of the contact stress, is proposed in this work. A modified coefficient ζ which links the mechanical properties of the electrode and particle material is introduced to describe the effect of contact stress. First, we find that the contact stress can weaken the stress-induced semicircle in the low-frequency range through analyzing the Faradaic part of the impedance. Second, considering the contact stress is determined by the mechanical bonding between electrode layer and the current collector, we introduce a pseudo-elastic boundary condition to analyze the bonding effect. For rigid substrate, namely the in-plane deformation is totally restricted, the effect of the contact stress is strong. For free substrate, namely the in-plane deformation is not restricted, the contact stress is not induced thus its effect on impedance disappears. Finally, we discuss the interaction effect of stress and the ionic transport in the electrolyte and find that the interaction is strong for silicon-based material, which indicates the stress effect needs to be considered when interpreting the impedance data in this case.

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“…Package-level measurements can be used to monitor temperature changes 10 and the volumetric changes of the cell due to regular (de) intercalation of Li-ions (from)into the electrodes or the irreversible expansion-inducing effects, such as gas build-up, 11,12 the growth of solid-electrolyte interface (SEI) film, 13 and Li-plating on the anode surface. [14][15][16] Importantly, methods that rely on outputs such as terminal voltages and cell capacity [17] may fail to identify anomalous behavior at the earliest stages; hence, alternative quantitative metrics like cell expansion [18] and localized temperature changes may telegraph cell behavior in ways that are currently unrealized and unutilized.…”

mentioning

confidence: 99%

“…Different methods have been employed to measure package expansion including strain gauges, 17,18 dilatometry, 19 piezo-sensors, 20 optical reflection-based, 21,22 etc. In recent years, fiber Bragg grating (FBG) optical fiber sensors have been employed in electrochemical energy storage systems such as fuel cells 23,24 and Li(Na)-ion batteries 8,25 for real-time monitoring of temperature, strain, and pressure.…”

mentioning

confidence: 99%

Towards Long-Term Monitoring of Commercial Lithium-Ion Batteries Enabled by Externally Affixed Fiber Sensors and Strain-Based Prognostic Strategies

Ghashghaie,

Bonefacino,

Cheung

et al. 2024

J. Electrochem. Soc.

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Real-time monitoring of both continuous and spontaneous degradation in lithium-ion batteries is challenging due to the limited number of quantitative metrics available during cycling. In this regard, improved sensing approaches enabled by sensors of high accuracy, precision, and durability are key to achieving comprehensive state estimation and meeting rigorous safety standards. In this work, external temperature and strain monitoring in commercial Li-ion button cells was carried out using tandem pairs of polymer-based and silica-based optical fiber Bragg grating sensors. The decoupled data revealed that the sensors can reliably track strain and temperature evolution for over 500 cycles, as evidenced by periodic patterns with no sign of sensor degradation or loss of fidelity. Moreover, monitoring the strain signal enabled early detection of an anomalous cell over ~60 cycles ahead of an electrochemical signature and abrupt drop in capacity, suggesting that mechanical sensing data may offer unique benefits in some cases. Detailed mechanical monitoring via incremental strain analysis suggests a parallel path toward understanding cell degradation mechanisms, regardless of whether they are continuous or discrete in nature. The accuracy and durability of such a package-level optical fiber sensing platform offer a promising pathway for developing robust real-time battery health monitoring techniques and prognostic strategies

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In-situ obtained internal strain and pressure of the cylindrical Li-ion battery cell with silicon-graphite negative electrodes

Cited by 21 publications

References 31 publications

Smart batteries enabled by implanted flexible sensors

Smart batteries enabled by implanted flexible sensors

A Modeling Framework of Electrochemo-mechanics of Lithium-ion Battery: Part II. Porous Electrodes with Contact Stress Effect

Towards Long-Term Monitoring of Commercial Lithium-Ion Batteries Enabled by Externally Affixed Fiber Sensors and Strain-Based Prognostic Strategies

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