Safety issues of defective lithium-ion batteries: identification and risk evaluation

Jia, Yikai; Liu, Binghe; Hong, Zhiguo; Yin, Sha; Finegan, Donal P.; Xu, Jun

doi:10.1039/d0ta04171h

Cited by 76 publications

(39 citation statements)

References 30 publications

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“…This results in chain reactions, and leads to thermal runaway. 109 During the entire process of temperature rise in a typical NMC/graphite battery with polyethylene membrane, the decomposition of SEI (80-120 • C), 110 reaction between anode and electrolyte, melting of polyethylene, decomposition of NMC and electrolyte, etc., are initiated sequentially ( Figure 6A). 107,111 Usually, thermal runaway temperature is defined as where the heat generation rate exceeds 1 • C/s.…”

Section: Battery Safetymentioning

confidence: 99%

“…Battery temperature abnormally rises under the mechanical, electrical, or thermal abuse conditions, causing the chemical reactions continuously. This results in chain reactions, and leads to thermal runaway 109 . During the entire process of temperature rise in a typical NMC/graphite battery with polyethylene membrane, the decomposition of SEI (80‐120°C), 110 reaction between anode and electrolyte, melting of polyethylene, decomposition of NMC and electrolyte, etc., are initiated sequentially (Figure 6A).…”

Section: Battery Safetymentioning

confidence: 99%

See 1 more Smart Citation

A perspective on sustainable energy materials for lithium batteries

Cheng

Lin

Yuan

et al. 2021

SusMat

241

147

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Lithium ion battery has achieved great success in portable electronics and even recently electronic vehicles since its commercialization in 1990s. However, lithium-ion batteries are confronted with several issues in terms of the sustainable development such as the high price of raw materials and electronic products, the emerging safety accidents, etc. The recent progresses are herein emphasized on lithium batteries for energy storage to clearly understand the sustainable energy chemistry and emerging energy materials. The Perspective presents novel lithium-ion batteries developed with the aims of enhancing the electrochemical performance and sustainability of energy storage systems. First, revolutionary material chemistries, including novel low-cobalt cathode, organic electrode, and aqueous electrolyte, are discussed. Then, the characteristics of safety performance are analyzed and strategies to enhance safety are subsequently evaluated. Battery recycling is considered as the key factor for a sustainable society and related technologies are present as well. Finally, conclusion and outlook are drawn to shed lights on the further development of sustainable lithium-ion batteries.

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Section: Battery Safetymentioning

confidence: 99%

Section: Battery Safetymentioning

confidence: 99%

A perspective on sustainable energy materials for lithium batteries

Cheng

Lin

Yuan

et al. 2021

SusMat

241

147

View full text Add to dashboard Cite

show abstract

“…In these applications, it is inevitable that the energy supplies are subject to accidents, such as needle penetration, compression, bending, cutting, leaking, and fire ( Scheme 1 ). [ 26–29 ] For example, for Li‐ion batteries, nail penetration usually causes serious catastrophic effects, such as short‐circuit, thermal runaway, and catastrophic fire/explosions. [ 26–29 ] Therefore, the development of highly safe energy supplies is of great significance.…”

Section: Introductionmentioning

confidence: 99%

“…[ 26–29 ] For example, for Li‐ion batteries, nail penetration usually causes serious catastrophic effects, such as short‐circuit, thermal runaway, and catastrophic fire/explosions. [ 26–29 ] Therefore, the development of highly safe energy supplies is of great significance.…”

Section: Introductionmentioning

confidence: 99%

Highly Safe, Durable, Adaptable, and Flexible Fuel Cell Using Gel/Sponge Composite Material

Zou

Jin

et al. 2021

Advanced Energy Materials

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With the rapid development of portable and wearable electronics, safety concerns over flexible energy devices are inevitable. Therefore, it is important to develop energy supplies that are safe for use. In this work, a highly safe, durable, adaptable, and flexible air‐breathing direct methanol fuel cell (DMFC) is successfully prepared by synthesizing and applying a new composite material with agar gel and wood sponge, that is, a gel/sponge composite. The gel/sponge composite has a high absorption rate, high cyclic performance, high methanol absorption capacity, high energy content, and high flexibility. Moreover, the gel/sponge composite with 1.5% agar gel retains approximately 90% of the methanol solution at a pressure of 29.4 kPa, and the areal energy density of the proposed DMFC approaches 13.7 mWh cm−2. Both the single‐cell and stack of DMFC with the new composite material successfully survive a series of destructive tests, including needle penetration, cutting, and compression. Therefore, it is successfully demonstrated that absorbent materials can greatly boost the safety, adaptability, flexibility, and energy density of air‐breathing DMFCs. Furthermore, this concept shows promise in improving the safety of other fuel cells by using absorbent materials to solidify their gaseous or liquid fuels.

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“…1,2 This means conducting investigations in the field of battery safety is crucial, which requires extensive analyses in various mechanical abuse conditions. Many studies have addressed the safety of lithium-ion batteries by investigating internal short circuit and defective batteries, 3,4 external abusive conditions, 5,6 and even at the vehicle level by utilizing machine learning techniques. 7 One of the challenges of such studies is to obtain accurate constitutive models of lithium-ion batteries and, more specifically, the electrode stack inside these cells to predict their behavior under various loading scenarios.…”

Section: Introductionmentioning

confidence: 99%

Homogenized characterization of cylindrical Li‐ion battery cells using elliptical approximation

Gilaki

Song

Sahraei

2021

Intl J of Energy Research

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Summary Homogenization and finding the constitutive model of jellyroll in cylindrical lithium‐ion batteries can be challenging because of their form factor. Taking samples out of the original jellyroll wounding or compressing cell assembly in its cylindrical coordinates are two possibilities for measuring the homogenized lateral strength of the cell. However, the former causes loss of accuracy due to changing constraints and electrolyte environment, and the latter requires complex fixtures that are not readily available or even practical to manufacture. Various approaches have been suggested by researchers to circumvent the above difficulties and allow the extraction of hardening curves. However, the precision of those approaches diminishes when the cells are under global compression vs local punch deformations. In this study, an updated homogenization method is established, using a lateral compression test on the jellyroll. The homogenization method is based on the assumption that the circular cross‐section of the jellyroll under compression is deformed in an elliptical shape. Then the principle of virtual work is used to extract the hardening curve. To validate the above characterization model, isotropic and anisotropic finite element models were developed using crushable foam and modified honeycomb material models from the LS‐DYNA library. Four sets of cell‐level experiments were performed on cylindrical batteries using custom‐designed fixtures, including flat lateral compression, rod indentation, hemispherical punch, and three‐point bending. The voltage and surface temperature of the batteries were measured to capture the onset of short circuit during the tests. Comparison of the simulation results confirmed that the proposed homogenization method and the FE models can predict the behavior of cylindrical lithium‐ion batteries with much higher accuracy compared to the currently available methods presented in the literature.

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Safety issues of defective lithium-ion batteries: identification and risk evaluation

Abstract: Lithium-ion batteries inevitably suffer minor damage or defects caused by external mechanical abusive loading, e.g., penetration, deformation, and scratch without triggering a hard/major short circuit.

Cited by 76 publications

References 30 publications

A perspective on sustainable energy materials for lithium batteries

A perspective on sustainable energy materials for lithium batteries

Highly Safe, Durable, Adaptable, and Flexible Fuel Cell Using Gel/Sponge Composite Material

Homogenized characterization of cylindrical Li‐ion battery cells using elliptical approximation

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