Abuse tolerance behavior of layered oxide-based Li-ion battery during overcharge and over-discharge

Qian, Kun; Li, Yiyang; He, Yan‐Bing; Liu, Dongqing; Zheng, Yong; Luo, Dan; Li, Baohua; Kang, Feiyu

doi:10.1039/c6ra11288a

Cited by 88 publications

(44 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The side reactions during overcharge are mainly induced by excessive high cathode potential, low anode overpotential, and elevated temperature. Under high cathode potential, the transitional metal ion at cathode such as Mn 2+ will dissolve and move from cathode to anode, eventually depositing on the anode. As the overcharge proceeds further, the oxidation of electrolyte will occur under higher cathode potential .…”

Section: Introductionmentioning

confidence: 99%

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

et al. 2020

View full text Add to dashboard Cite

Summary Many fire accidents of electric vehicles were reported that happened during the charging process. In order to investigate the reasons that lead to this problem, this paper studies the thermal safety of Li‐ion batteries under limited overcharge abuse. A 3D electrochemical‐thermal coupled model is developed for modeling thermal and electrochemical characteristics from normal charge to early overcharge state. This model is validated by experiment at charge rates of 0.5C, 1C, and 2C. The simulation results indicate that irreversible heat contributes most to temperature rise during the normal charge process, but the heat induced by Mn dissolution and Li deposition gradually dominates heat generation in the early overcharge period. Based on this, a threshold selection method for multistage warning of batteries overcharge is proposed. Among them, level 1 should be considered as a critical stage during the early overcharge process due to the deposited lithium starts to react with electrolyte at the end of level 1, where temperature rate increases to 0.5°C min−1 for 1C charge. While the thresholds of levels depend on charge rate and composition of battery. Furthermore, several critical parameters are analyzed to figure out their effects on thermal safety. It is found that the temperature at the end of overcharge is significantly influenced by the change of positive electrode thickness and solid electrolyte interface (SEI) film resistance. The final temperature increases by 17.5°C and 7.9°C, respectively, with positive electrode thickness ranging from 50 to 80 μm and SEI film resistance increasing from 0.002 to 0.03 Ω.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

et al. 2020

View full text Add to dashboard Cite

show abstract

“…6,7 To date, the failure mechanisms of overcharged LIBs have been widely investigated. [11][12][13][14][15][16][17] Xu et al 11 announced that during the overcharge process, Fe (iron) dendrites continued growing upon both electrodes, which might penetrate through the separator and induce short circuiting eventually, leading to the failure of a battery. [11][12][13][14][15][16][17] Xu et al 11 announced that during the overcharge process, Fe (iron) dendrites continued growing upon both electrodes, which might penetrate through the separator and induce short circuiting eventually, leading to the failure of a battery.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the degradation behaviors of overcharged lithium‐ion batteries under different ambient temperatures

2019

View full text Add to dashboard Cite

In the current work, a series of experiments are carried out to investigate the degradation behavior of lithium-ion batteries during overcharge cycling, as well as the influence of ambient temperature on the degradation. In which, different charge cut-off voltages (4.5, 4.8, and 5.0 V) and ambient temperatures (0°C , 20°C, 50°C, and 70°C) are included. During the overcharge process, the batteries demonstrate severe temperature rises, and several key electrochemical parameters such as the charge capacity, energy density, median voltage, and resistances all increase, revealing the deterioration of heat generation and electrode kinetics. Besides that, batteries exhibit serious degradation behavior during the overcharge cycling, which is presented through the evolution of battery temperature curves, charge voltage curves, and internal resistance curves. Moreover, the severity of degradation exacerbates with the increasing overcharge degree. Finally, it is found that deep-overcharged batteries may be more sensitive to the ambient temperature than slight-overcharged ones, where an abusive temperature can significantly aggravate the corresponding degradation.

show abstract

“…Ouyang et al investigated the overcharge‐induced capacity fading mechanism through IC analysis and proposed different capacity loss mechanisms from different cathode materials . Qian et al investigated the cycle decay behavior of Li (Ni 1/3 Co 1/3 Mn 1/3 )O 2 /graphite battery during slight overcharge condition . By using IC analysis, they found that the loss of NCM materials, SEI growth, and electrolyte oxidation would happen during overcharging process.…”

Section: Introductionmentioning

confidence: 99%

“…24 Qian et al investigated the cycle decay behavior of Li (Ni 1/3 Co 1/3 Mn 1/3 )O 2 /graphite battery during slight overcharge condition. 25 By using IC analysis, they found that the loss of NCM materials, SEI growth, and electrolyte oxidation would happen during overcharging process.…”

Section: Introductionmentioning

confidence: 99%

Study on degradation behavior of commercial 18650 LiAlNiCoO₂cells in over‐charge conditions

et al. 2018

View full text Add to dashboard Cite

Summary From the battery life and safety perspective, an investigation was conducted to analyze the degradation behavior of 18650 LiAlNiCoO2 (NCA/C) cells with different cut‐off voltages (4.30, 4.50, 4.80 and 5.00 V) and different cycle numbers. Electrochemical Impedance Spectroscopy (EIS) and Incremental Capacity (IC) analysis were employed to identify the fading mechanism for overcharged NCA/C cells. Key insights were that major side reactions for the overcharged NCA cells are the oxidation and decomposition of electrolyte, the thickening of the passivation layer, the deposition of lithium and the structure change of cathode. These side reactions accounted for the increase of impedance for the cells with the cut‐off voltages and the cycle numbers, especially for the charge transfer impedance. An EIS‐distribution of relaxation time (DRT) method was applied to identify and quantify the influences of various degradation modes during overcharging process. The loss of lithium inventory (LLI) was more pertinent to the degradation than the conductivity loss (CL) and the loss of active material (LAM). Conspicuous variations in the cell can assist in self‐test and failure warning, such as the rapid rise of the temperature change rate, the evident transformation of peaks in IC results and the irreversible increase of CL.

show abstract

Abuse tolerance behavior of layered oxide-based Li-ion battery during overcharge and over-discharge

Abstract: The main reason for the degradation of slightly overcharged NCM/graphite full cells was found to be the unstable crystal structure of the NCM material at a relatively high delithiation state.

Cited by 88 publications

References 33 publications

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

A comparative study on the degradation behaviors of overcharged lithium‐ion batteries under different ambient temperatures

Study on degradation behavior of commercial 18650 LiAlNiCoO₂cells in over‐charge conditions

Contact Info

Product

Resources

About

Abuse tolerance behavior of layered oxide-based Li-ion battery during overcharge and over-discharge

Abstract: The main reason for the degradation of slightly overcharged NCM/graphite full cells was found to be the unstable crystal structure of the NCM material at a relatively high delithiation state.

Cited by 88 publications

References 33 publications

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

Thermal safety study of Li‐ion batteries under limited overcharge abuse based on coupled electrochemical‐thermal model

A comparative study on the degradation behaviors of overcharged lithium‐ion batteries under different ambient temperatures

Study on degradation behavior of commercial 18650 LiAlNiCoO2cells in over‐charge conditions

Contact Info

Product

Resources

About

Study on degradation behavior of commercial 18650 LiAlNiCoO₂cells in over‐charge conditions