Quantifying the Impact of Overdischarge on Large Format Lithium-Ion Cells

Fuentevilla, Daphne A.; Hendricks, Christopher; Mansour, A. N.

doi:10.1149/06920.0001ecst

Cited by 11 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fuentevilla et al reported the anode potential exceeds 3.4 V for large format (>30 Ah) cell under overdischarge, the copper in the form of Cu 2+ originating from the anode's current collectors existed on the cathode 61 . In the subsequent charging, Cu 2+ will be reduced to copper atoms and plate on the surface of negative electrodes since the first Li + intercalates into carbonaceous materials.…”

Section: Inducements Of Iscmentioning

confidence: 99%

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

Huang

Liu

et al. 2021

Int J Energy Res

View full text Add to dashboard Cite

Summary Internal short circuit (ISC) of lithium‐ion battery is one of the most common reasons for thermal runaway, commonly caused by mechanical abuse, electrical abuse and thermal abuse. This study comprehensively summarizes the inducement, detection and prevention of the ISC. Firstly, the fault tree is utilized to analyze the ISC inducement, including the abuse conditions, improper manufacture and design defects. Secondly, the ISC substitute triggering methods (utilizing mechanical deformation from the outside or utilizing controllable components introduced inside) are summarized considering the randomness of ISC, which have high repeatability. Moreover, these methods can be used to investigate the evolution and the hazard boundary of ISC. The ISC severity is determined by the ISC type, ISC location, ISC area, battery state of charge, capacity, material and structure. There are four types of ISC mode, the danger extends ranking is aluminum‐anode > aluminum‐copper > cathode‐copper > cathode‐anode. The ISC evolution is presented based on the upper summary. Then, the ISC detection methods are reviewed: (1) comparing the measured data with the predicted value from the model; (2) detecting whether the battery has self‐discharge; (3) comparing based on the battery inconsistency and (4) other signals. Finally, the prevention strategies are summarized, which can be used to reduce the ISC risk by blocking electron or lithium‐ion channels in the battery cell.

show abstract

Section: Inducements Of Iscmentioning

confidence: 99%

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

Huang

Liu

et al. 2021

Int J Energy Res

View full text Add to dashboard Cite

show abstract

“…During this time, apart from self-discharge, the cells might have small load requirements of the BMS and/or might even have parasitic loads. Thus, if not managed correctly, the cells might slip in time to overdischarge conditions, especially at elevated temperatures [23,32,54]. This situation might also occur in electric vehicles that are parked at low SOCs for long durations especially at high temperatures above 40 °C-they can actually overdischarge during this time (and thus significantly affect lifetime of the battery as already outlined in the previous section) [31].…”

Section: Causes Of Overdischarge In Commercial Li-ion Cellsmentioning

confidence: 98%

Reviewing the Safe Shipping of Lithium-Ion and Sodium-Ion Cells: A Materials Chemistry Perspective

2021

View full text Add to dashboard Cite

High energy density lithium-ion (Li-ion) batteries are commonly used nowadays. Three decades’ worth of intense research has led to a good understanding on several aspects of such batteries. But, the issue of their safe storage and transportation is still not widely understood from a materials chemistry perspective. Current international regulations require Li-ion cells to be shipped at 30% SOC (State of Charge) or lower. In this article, the reasons behind this requirement for shipping Li-ion batteries are firstly reviewed and then compared with those of the analogous and recently commercialized sodium-ion (Na-ion) batteries. For such alkali-ion batteries, the safest state from their active materials viewpoint is at 0 V or zero energy, and this should be their ideal state for storage/shipping. However, a “fully discharged” Li-ion cell used most commonly, composed of graphite-based anode on copper current collector, is not actually at 0 V at its rated 0% SOC, contrary to what one might expect—the detailed mechanism behind the reason for this, namely, copper dissolution, and how it negatively affects cycling performance and cell safety, will be summarized herein. It will be shown that Na-ion cells, capable of using a lighter and cheaper aluminum current collector on the anode, can actually be safely discharged to 0 V (true 0% SOC) and beyond, even to reverse polarity (negative voltages). It is anticipated that this article spurs further research on the 0 V capability of Na-ion systems, with some suggestions for future studies provided.

show abstract

“…The possible factors for electrical abuse in commercialized LIBs are mainly caused by overdischarge due to inconsistencies between battery monomers. , Based on the current manufacturing of battery monomers, the factory consistency is very high. However, with the use and aging of the battery system, some of the monomers undergo a decrease in capacity and an increase in internal resistance due to the uneven working temperature during the use of the monomers, and the difference in the consistency between the monomers also follows upon battery pack aging. , This phenomenon causes some batteries to have a relatively large discharge depth under normal discharge conditions, such as instantaneous high power output of EVs and the deep discharge of grid storage batteries, and then overdischarge occurs. , Because there are series and parallel batteries in a battery system, these overdischarged batteries may not be found, posing a safety hazard for the whole battery system.…”

Section: Introductionmentioning

confidence: 99%

Degradation Mechanism Study and Safety Hazard Analysis of Overdischarge on Commercialized Lithium-ion Batteries

Wang

et al. 2020

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

With the continuous improvement of the energy density of traction batteries for electric vehicles, the safety of batteries over their entire lifecycle has become the most critical issue in the development of electric vehicles. Abuse of electricity encountered in the application of batteries has a great impact on the safety of traction batteries. In this study, focused on the overdischarge phenomenon that is most likely to be encountered in the practical use of electric vehicles and grid storage, the impact of overdischarge on battery performance degradation is analyzed by neutron imaging technology and its safety hazards is systematically explored, combined with multimethods including electrochemical analysis and structural characterization. Results reveal the deterioration of the internal structure of traction batteries due to the overdischarge behavior and play a guiding role in the testing and evaluation of the safety of traction batteries.

show abstract

Quantifying the Impact of Overdischarge on Large Format Lithium-Ion Cells

Cited by 11 publications

References 6 publications

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

A review of the internal short circuit mechanism in lithium‐ion batteries: Inducement, detection and prevention

Reviewing the Safe Shipping of Lithium-Ion and Sodium-Ion Cells: A Materials Chemistry Perspective

Degradation Mechanism Study and Safety Hazard Analysis of Overdischarge on Commercialized Lithium-ion Batteries

Contact Info

Product

Resources

About