Insights Into Thermal Runaway of Li–Ion Cells by Accelerating Rate Calorimetry Coupled with External Sensors and Online Gas Analysis

Abd-El-Latif, Abd-El-Aziz A.; Sichler, Peter; Kasper, Michael; Waldmann, Thomas; Wohlfahrt‐Mehrens, Margret

doi:10.1002/batt.202100023

Cited by 33 publications

(14 citation statements)

References 58 publications

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“…[17][18][19] A severe aging mechanism in LIBs is Li plating/deposition, since it can lead to fast aging as well as to a decrease of safety. [20][21][22][23][24][25] Most research on Li deposition focusses on graphite anodes. 26 However, there is a lack of knowledge on Li deposition on Si/graphite anodes.…”

mentioning

confidence: 99%

Detection of Li Deposition on Si/Graphite Anodes from Commercial Li-Ion Cells: A Post-Mortem GD-OES Depth Profiling Study

Flügel

Richter

Wohlfahrt‐Mehrens

et al. 2022

J. Electrochem. Soc.

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A new semi-quantitative method was developed to detect Li deposition on Si/graphite anodes. This method is based on Post-Mortem glow discharge optical emission spectroscopy (GD-OES) depth profiling. Based on the contents of Si, Li, and O in the GD-OES depth profiles, we define a corridor, in which the minimum amount of metallic Li on the anode is located. This method was applied to three types of commercial 18650 cells with Si/graphite anodes in the fresh state and with Li plating intentionally produced by cycling at low temperatures. Additional cells were cycling aged at 45 °C to 80% SOH. The main aging mechanisms at 45 °C were determined using differential voltage analysis (DVA), SEM, and half cell experiments. Subsequently, the cells aged at 45 °C were further cycled under the conditions that had led to Li deposition for the fresh cells. Furthermore, the anode coating thickness for 18 types of commercial Li-ion cells are correlated with the specific energy, while distinguishing between graphite anodes and Si/graphite anodes. Our extensive Post-Mortem study gives deep insights into the aging behavior of state-of-the-art Li-ion cells with Si/graphite anodes.

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mentioning

confidence: 99%

Detection of Li Deposition on Si/Graphite Anodes from Commercial Li-Ion Cells: A Post-Mortem GD-OES Depth Profiling Study

Flügel

Richter

Wohlfahrt‐Mehrens

et al. 2022

J. Electrochem. Soc.

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“…Catastrophic failures can be avoided in practical temperature ranges through advanced analysis techniques, modeling to improve thermal management systems and fastcharging protocols. Waldmann et al [97] developed a new analytical method (ARC-MS) that combines accelerated calorimetry (ARC) with mass spectrometry (MS), battery resistance, and audio recordings to investigate the thermal runaway processes in LIBs. Li deposition aged and overcharged batteries exhibit early self-heating at 36 °C, while unaged battery starts to selfheating at 96 °C.…”

Section: Thermal Issues Related With Fast-chargingmentioning

confidence: 99%

Fast‐Charging Strategies for Lithium‐Ion Batteries: Advances and Perspectives

Zhao

Song

2022

ChemPlusChem

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Rapid development of high-energy-density lithium-ion batteries (LIBs) enables the sufficient driving range of electric vehicles (EVs). However, the slow charging speed restricts the popularization of EVs. Commitment to fast-charging research is considered to be the key to advance the EVs strategy. This Review discusses the kinetic factors limiting the fast-charging capability at the material aspects, and summarizes the recent research strategies to achieve fast-charging performance of high-energy-density LIBs through electrode engineering, electrolyte design, and interface optimization. The increasingly important role of computational tools and advanced characterization techniques in fundamentally understanding the failure mechanism of LIBs is emphasized, and the analysis of the thermal runaway problem in the fast-charging process and the corresponding thermal optimization scheme is also involved to give the guidance for the more rational battery design. In view of these factors and strategies, some future perspectives for realizing high-performance fast-charging LIBs are proposed, which are expected to facilitate the large-scale application of fast-charging LIBs in EVs.

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“…A new combination of accelerating rate calorimetry coupled with a mass spectrometer, as well as cell resistance and audio recording, was applied to study commercial 18650-type Li-ion cells. This novel setup allows following the electrochemical and thermal behavior simultaneously of the evolved gases during cell venting and thermal runaway [ 299 ].…”

Section: Applications To Batteries and Conducting Materialsmentioning

confidence: 99%

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

et al. 2022

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Advances in on-line thermally induced evolved gas analysis (OLTI-EGA) have been systematically reported by our group to update their applications in several different fields and to provide useful starting references. The importance of an accurate interpretation of the thermally-induced reaction mechanism which involves the formation of gaseous species is necessary to obtain the characterization of the evolved products. In this review, applications of Evolved Gas Analysis (EGA) performed by on-line coupling heating devices to mass spectrometry (EGA-MS), are reported. Reported references clearly demonstrate that the characterization of the nature of volatile products released by a substance subjected to a controlled temperature program allows us to prove a supposed reaction or composition, either under isothermal or under heating conditions. Selected 2019, 2020, and 2021 references are collected and briefly described in this review.

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Insights Into Thermal Runaway of Li–Ion Cells by Accelerating Rate Calorimetry Coupled with External Sensors and Online Gas Analysis

Cited by 33 publications

References 58 publications

Detection of Li Deposition on Si/Graphite Anodes from Commercial Li-Ion Cells: A Post-Mortem GD-OES Depth Profiling Study

Detection of Li Deposition on Si/Graphite Anodes from Commercial Li-Ion Cells: A Post-Mortem GD-OES Depth Profiling Study

Fast‐Charging Strategies for Lithium‐Ion Batteries: Advances and Perspectives

On-Line Thermally Induced Evolved Gas Analysis: An Update—Part 1: EGA-MS

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