Tab Design and Failures in Cylindrical Li-ion Batteries

Yao, Xingyan; Pecht, Michael

doi:10.1109/access.2019.2899793

Cited by 49 publications

(22 citation statements)

References 18 publications

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“…291 During cell test including LMA in the battery, a safety chamber filled with inert gas coupling with venting system will enhance the handle of cycling LMA. 292,293 Cycled LMBs contain LMA with pulverized Li particles need to be handled carefully. During cell transfer, abnormal pressures (drop, crush, vibrate, and bump) need to be avoided.…”

Section: Good Practice Of Rechargeable LI Metal Batteriesmentioning

confidence: 99%

Lithium Metal Anodes with Nonaqueous Electrolytes

et al. 2020

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High-energy rechargeable lithium (Li) metal batteries (LMBs) with Li metal anode (LMA) were first developed in the 1970s, but their practical applications have been hindered by the safety and low-efficiency concerns related to LMA. Recently, a worldwide effort on LMA-based rechargeable LMBs has been revived to replace graphite-based, Li-ion batteries because of the much higher energy density that can be achieved with LMBs. This review focuses on the recent progress on the stabilization of LMA with nonaqueous electrolytes and reveals the fundamental mechanisms behind this improved stability. Various strategies that can enhance the stability of LMA in practical conditions and perspectives on the future development of LMA are also discussed. These strategies include the use of novel electrolytes such as superconcentrated electrolytes, localized high-concentration electrolytes, and highly fluorinated electrolytes, surface coatings that can form a solid electrolyte interphase with a high interfacial energy and self-healing capabilities, development of "anode-free" Li batteries to minimize the interaction between LMA and electrolyte, approaches to enable operation of LMA in practical conditions, etc. Combination of these strategies ultimately will lead us closer to the large-scale application of LMBs which often is called the "Holy Grail" of energy storage systems.

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Section: Good Practice Of Rechargeable LI Metal Batteriesmentioning

confidence: 99%

Lithium Metal Anodes with Nonaqueous Electrolytes

et al. 2020

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“…Regarding the composition of the centre pin and anode tab, diffraction patterns showed that both phases can be described as cubic with lattice parameters of 3.594 Å and 3.529 Å respectively (Table S1-S2); it is indicated that the anode tab consists of the metallic alloy Ni0.92Cu0.02 while the center pin is based on a Fe metallic alloy. These materials are known to be used in the manufacturing of cylindrical Li-ion batteries 48 . X-ray diffraction point measurements performed during the first two full cycles were used to follow the evolution of crystalline lithiated graphite phases (Figure 2).…”

Section: Resultsmentioning

confidence: 99%

Emerging chemical heterogeneities in a commercial 18650 Li-ion battery during early cycling

Matras

Ashton

Dong

et al. 2022

Preprint

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X-ray diffraction computed tomography (XRD-CT) was employed to study a commercial 18650 cylindrical LiNi0.8Co0.15Al0.05O2 (NCA) battery under operating conditions and during seven cycles. Multiple chemical heterogeneities related to the lithium distribution were observed in both the cathode and the anode from the analysis of the spatially-resolved diffraction signals. It is shown that during the battery charging, the anode exhibits different degrees of activity regarding the lithiation process. Explicitly, the following three regions were identified: uniform/homogenous lithiation, delayed lithiation and inactive-to-lithiation regions. The delayed lithiation region, observed for the first time, was seen to have a direct impact on the properties of NCA in its close proximity during the battery discharging, preventing its full lithiation by trapping the lithium in the form of LiC30-30+ phase. Further to this, the aluminum tab negatively affected the NCA in direct contact with it, leading to different lattice parameter a and c evolution compared to the rest of the cathode.

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“…For instance, heterogeneous particle distributions or porosity profiles on the electrode level can lead to localized lithium plating. 133 Furthermore, the presence and location of electrode tabs in cylindrical cells can create electrochemical, thermal, and mechanical gradients, 18,130,[134][135][136][137][138][139][140][141] in some cases also leading to localized lithium plating 18,62 . Heterogeneity can also arise from ambient factors, e.g., thermal gradients induced by environment or thermal management systems.…”

Section: Mechanical Deformation Kneesmentioning

confidence: 99%

"Knees" in lithium-ion battery aging trajectories

Attia,

Bills,

Planella

et al. 2022

Preprint

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Lithium-ion batteries can last many years but sometimes exhibit rapid, nonlinear degradation that severely limits battery lifetime. In this work, we review prior work on "knees" in lithium-ion battery aging trajectories. We first review definitions for knees and three classes of "internal state trajectories" (termed snowball, hidden, and threshold trajectories) that can cause a knee. We then discuss six knee "pathways", including lithium plating, electrode saturation, resistance growth, electrolyte and additive depletion, percolation-limited connectivity, and mechanical deformation-some of which have internal state trajectories with signals that are electrochemically undetectable. We also identify key design and usage sensitivities for knees. Finally, we discuss challenges and opportunities for knee modeling and prediction. Our findings illustrate the complexity and subtlety of lithium-ion battery degradation and can aid both academic and industrial efforts to improve battery lifetime.

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Tab Design and Failures in Cylindrical Li-ion Batteries

Cited by 49 publications

References 18 publications

Lithium Metal Anodes with Nonaqueous Electrolytes

Lithium Metal Anodes with Nonaqueous Electrolytes

Emerging chemical heterogeneities in a commercial 18650 Li-ion battery during early cycling

"Knees" in lithium-ion battery aging trajectories

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