Operando Monitoring of Electrode Temperatures During Overcharge‐Caused Thermal Runaway

Li, Bing; Parekh, Mihit H.; Pol, Vilas G.; Adams, Thomas E.; Fleetwood, James D.; Jones, Claude R.; Tomar, Vikas

doi:10.1002/ente.202100497

Cited by 15 publications

(9 citation statements)

References 40 publications

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“…By this finding and monitoring the temperature of each cell in a battery pack, people may find batteries with different degrees of overcharging in time. 47,48 Effect of environment temperature on 4.8 V overcharging and the heat generation characteristics during subsequent normal cycle.-Cells may run at various environment temperatures and show different overcharging performance. To study the effect of environment temperature, pristine cells were overcharged to 4.8 V at 0.1 C at different temperatures, denoted as OC-4.8-T10, OC-4.8-T25 and OC-4.8-T40, then all the following tests are at 25 °C.…”

Section: Resultsmentioning

confidence: 99%

Heat Generation and Temperature Rise Characteristics of Single Overcharged Lithium-Ion Batteries

Zhang¹,

Li²,

Liu³

et al. 2022

J. Electrochem. Soc.

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It’s critical to quantitatively investigate the thermal characteristics of single overcharged lithium-ion batteries to realize security alert before thermal runaway occurs. In this work, various (LiCoO2 + LiMn2O4)/graphite soft pack cells overcharged under different cut-off voltages, temperatures and C-rates are tested electrochemically to calculate the heat generation rate and distinguish the dominating heat resource. The results show that overcharged cells with higher cut-off voltage, overcharge temperature and the lower overcharge C-rate exhibit higher heat generation and temperature rise rate as well as poorer state of healthy. Among nonexplosive tested cells, the cell overcharged to 4.8 V at 0.1 C rate and 40°C exhibits the highest heat generation and temperature rise rates of 9.17 W·L-1 and 4.60 °C·h-1 during 1 C charging at 25°C. For overcharged cells, lithium plating, increased resistance and gas generation are observed, which are the reason for the accelerated total heat generation rate compared to baseline cells. Comparing with reversible heat, the irreversible heat resulting from diffusion overpotential and the sum of ohmic and charge transfer overpotential is dominating for overcharged cells working under high current. It’s recommended to comprehensively monitor the temperature change of each cell of battery pack.

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Section: Resultsmentioning

confidence: 99%

Heat Generation and Temperature Rise Characteristics of Single Overcharged Lithium-Ion Batteries

Zhang¹,

Li²,

Liu³

et al. 2022

J. Electrochem. Soc.

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Section: Advanced Thermal Monitoring Techniques In Sslbmentioning

confidence: 99%

Advances in thermal‐related analysis techniques for solid‐state lithium batteries

Wang

Yang

Sun

et al. 2023

InfoMat

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Solid‐state lithium batteries (SSLBs) have been broadly accepted as a promising candidate for the next generation lithium‐ion batteries (LIBs) with high energy density, long duration, and high safety. The intrinsic non‐flammable nature and electrochemical/thermal/mechanical stability of solid electrolytes are expected to fundamentally solve the safety problems of conventional LIBs. However, thermal degradation and thermal runaway could also happen in SSLBs. For example, the large interfacial resistance between solid electrolytes and electrodes could aggravate the joule heat generation; the anisotropic thermal diffusion could trigger the uneven temperature distribution and formation of hotspots further leading to lithium dendrite growth. Considerable research efforts have been devoted to exploring solid electrolytes with outstanding performance and harmonizing interfacial incompatibility in the past decades. There have been fewer comprehensive reports investigating the thermal reaction process, thermal degradation, and thermal runaway of SSLBs. This review seeks to highlight advanced thermal‐related analysis techniques for SSLBs, by focusing particularly on multiscale and multidimensional thermal‐related characterization, thermal monitoring techniques such as sensors, thermal experimental techniques imitating the abuse operating condition, and thermal‐related advanced simulations. Insightful perspectives are proposed to bridge fundamental studies to technological relevance for better understanding and performance optimization of SSLBs.

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“…In contrast, thermistors have higher accuracy and can be used for higher temperature testing. 22,54,72 used RTD for TR detection at the electrodes of LIBs to capture the maximum temperature inside the cell. H. Parekh et al used RTDs to make in situ measurements on cells in external short-circuit and overcharge conditions.…”

Section: Journal Of the Electrochemical Society 2023 170 057517mentioning

confidence: 99%

Review—Online Monitoring of Internal Temperature in Lithium-Ion Batteries

Xiao¹,

Liu²,

Zhao³

et al. 2023

J. Electrochem. Soc.

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In recent years, fire and explosion accidents caused by high temperatures of lithium-ion batteries have become increasingly frequent, and the safety and reliability of batteries have been of great concern. Battery temperature monitoring is an important means to prevent the occurrence of safety accidents, but at present, it mainly focuses on the external temperature and lacks the monitoring of internal temperature changes and measurement of physical parameters of the battery, which makes it difficult to effectively solve the safety problem of the battery. In this paper, starting from the thermal runaway safety problem faced by Li-ion batteries, we analyze the heat generation principle and temperature effect during battery operation, and discuss various methods of internal battery temperature monitoring, including in-situ temperature measurement, multi-parameter measurement inside the battery, temperature measurement based on thin-film sensors and distributed fiber optic sensors, and impedance-based temperature estimation. Also, the advantages and disadvantages of different sensing techniques are compared, and the challenges of inserting temperature sensors into real batteries are reviewed. Finally, this paper presents directions and difficulties for future research on internal temperature monitoring of Li-ion batteries.

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Operando Monitoring of Electrode Temperatures During Overcharge‐Caused Thermal Runaway

Cited by 15 publications

References 40 publications

Heat Generation and Temperature Rise Characteristics of Single Overcharged Lithium-Ion Batteries

Heat Generation and Temperature Rise Characteristics of Single Overcharged Lithium-Ion Batteries

Advances in thermal‐related analysis techniques for solid‐state lithium batteries

Review—Online Monitoring of Internal Temperature in Lithium-Ion Batteries

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