Inhomogeneous degradation induced by lithium plating in a large-format lithium-ion battery

Xie, Yingchen; Wang, Shan; Li, Ruihe; Ren, Dongsheng; Yi, Mengchao; Xu, Chang; Han, Xiao; Lu, Languang; Frieß, Benedikt; Offer, Gregory J.; Ouyang, Minggao

doi:10.1016/j.jpowsour.2022.231753

Cited by 42 publications

(13 citation statements)

References 38 publications

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“…This was later confirmed with post mortem analysis (Figure 4). Spatially inhomogeneous degradation is a known phenomenon and depends on distributions of temperature, pressure, and electrolyte in the battery cells [37,61,81]. It is worth mentioning that in the studied cases this heterogeneity is present but yet not severe enough to lead to the "knee point" which is typical for cells exhibiting a higher degree of ageing heterogeneity [54].…”

Section: Discussionmentioning

confidence: 87%

Ageing of High Energy Density Automotive Li-ion Batteries: The Effect of Temperature and State-of-Charge

Mikheenkova

Smith

Frenander

et al. 2023

Preprint

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Lithium ion batteries (LIB) have become a cornerstone of the shift to electric transportation. In an attempt to decrease the production load and prolong battery life, understanding different degradation mechanisms in state-of-the-art LIBs is essential. Here, we analyze how operational temperature and state-of-charge (SoC) range in cycling influence the ageing of automotive grade 21700 batteries, extracted from a Tesla 3 Long Range 2018 battery pack with positive electrode containing LiNixCoyAlzO2 (NCA) and negative electrode containing SiOx-C. In the given study we use a combination of electrochemical and material analysis to understand degradation sources in the cell. Herein we show that loss of lithium inventory is the main degradation mode in the cells, with loss of material on the negative electrode as there is a significant contributor when cycled in the low SoC range. Degradation of NCA dominates at elevated temperatures with combination of cycling to high SoC (beyond 50%).

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Section: Discussionmentioning

confidence: 87%

Ageing of High Energy Density Automotive Li-ion Batteries: The Effect of Temperature and State-of-Charge

Mikheenkova

Smith

Frenander

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Spatially inhomogeneous degradation is a known phenomenon and depends on distributions of temperature, pressure, and electrolyte in the battery cells. 37,62,82 It is worth mentioning that in the studied cases this heterogeneity is present but yet not severe enough to lead to the "knee point" which is typical for cells exhibiting a higher degree of ageing heterogeneity. 55 The general trend across all ageing conditions shows a sublinear dependence of capacity loss vs the number of FCE (Fig.…”

Section: Discussionmentioning

confidence: 88%

Ageing of High Energy Density Automotive Li-Ion Batteries: The Effect of Temperature and State-of-Charge

Mikheenkova

Smith²,

Frenander

et al. 2023

J. Electrochem. Soc.

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Lithium ion batteries (LIB) have become a cornerstone of the shift to electric transportation. In an attempt to decrease the production load and prolong battery life, understanding different degradation mechanisms in state-of-the-art LIBs is essential. Here, we analyze how operational temperature and state-of-charge (SoC) range in cycling influence the ageing of automotive grade 21700 batteries, extracted from a Tesla 3 Long Range 2018 battery pack with positive electrode containing LiNixCoyAlzO2 (NCA) and negative electrode containing SiOx-C. We used a combination of electrochemical and material analysis to understand degradation sources in the cell. Herein we show that loss of lithium inventory is the main degradation mode in the cells, with loss of material on the negative electrode as there is a significant contributor when cycled in the low SoC range. Degradation of NCA dominates at elevated temperatures with combination of cycling to high SoC (beyond 50%).

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“…Recent studies have revealed that Li metal can be deposited in various macroscopic morphologies. [62][63][64] Therefore, the terms "Li plating" and "Li deposition" have been defined based on the morphologies found in commercial LIBs, as shown in Fig. 4b.…”

Section: Lithium Platingmentioning

confidence: 99%

Decoding the puzzle: recent breakthroughs in understanding degradation mechanisms of Li-ion batteries

Singh,

Hassan,

Bathula

et al. 2023

Dalton Trans.

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Inhomogeneous degradation induced by lithium plating in a large-format lithium-ion battery

Cited by 42 publications

References 38 publications

Ageing of High Energy Density Automotive Li-ion Batteries: The Effect of Temperature and State-of-Charge

Ageing of High Energy Density Automotive Li-ion Batteries: The Effect of Temperature and State-of-Charge

Ageing of High Energy Density Automotive Li-Ion Batteries: The Effect of Temperature and State-of-Charge

Decoding the puzzle: recent breakthroughs in understanding degradation mechanisms of Li-ion batteries

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