Over-heating triggered thermal runaway behavior for lithium-ion battery with high nickel content in positive electrode

Wang, Haimin; Shi, Weijie; Hu, Feng; Wang, Yufei; Hu, Xuebin; Li, Huanqi

doi:10.1016/j.energy.2021.120072

Cited by 69 publications

(15 citation statements)

References 47 publications

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“…Moreover, the limited size and thermal capacity of the battery pack can further worsen the thermal management issues [12]. In particular, if the temperature in a battery cell (especially if aged) rises above 80°C, the thermal runaway can be triggered and its propagation within the pack can further result in catastrophic hazards [13]. Therefore, in these vehicles, high power battery cells (with relatively low internal resistance) and an efficient thermal management system are required.…”

Section: Introductionmentioning

confidence: 99%

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

et al. 2022

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The thermal management of lithium-ion batteries in hybrid electric vehicles is a key issue, since operating temperatures can greatly affect their performance and life. A hybrid energy storage system, composed by the integration of a battery pack with a metal hydride-based hydrogen storage system, might be a promising solution, since it allows to efficiently exploit the endothermic desorption process of hydrogen in metal hydrides to perform the thermal management of the battery pack. In this work, starting from a battery electric scooter, a new fuel cell/battery hybrid powertrain is designed, based on the simulation results of a vehicle dynamic model that evaluates power and energy requirements on a standard driving cycle. Thus, the design of an original hybrid energy storage system for a plug-in fuel cell electric scooter is proposed, and its prototype development is presented. To this aim, the battery pack thermal power profile is retrieved from vehicle simulation, and the integrated metal hydride tank is sized in such a way to ensure a suitable thermal management. The conceived storage solution replaces the conventional battery pack of the vehicle. This leads to a significant enhancement of the on-board gravimetric and volumetric energy densities, with clear advantages on the achievable driving range. The working principle of the novel storage system and its integration within the powertrain of the vehicle are also discussed.

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Section: Introductionmentioning

confidence: 99%

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

et al. 2022

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“…Moreover, the increase in nickel content within the cathode material will lead to a serious safety pitfall in the cell. From Li(Ni 0.33 Mn 0.33 Co 0.33 )O 2 to Li(Ni 0.5 Mn 0.3 Co 0.2 )O 2 , Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 , and NMC811, the oxygen‐releasing temperature of the cathode material gradually decreases such that the thermal runaway (TR) of cells is more easily induced 8‐10 …”

Section: Introductionmentioning

confidence: 99%

“…From Li(Ni 0.33 Mn 0.33 Co 0.33 )O 2 to Li(Ni 0.5 Mn 0.3 Co 0.2 )O 2 , Li(Ni 0.6 Mn 0.2 Co 0.2 )O 2 , and NMC811, the oxygen-releasing temperature of the cathode material gradually decreases such that the thermal runaway (TR) of cells is more easily induced. [8][9][10] To overcome the degradation and safety problems of NMC811 cells under high voltages, high-voltage electrolytes have been proposed; whereby, methods to increase the high-voltage stability of Li-ion cells mainly focus on fluorinated electrolytes, 1,[11][12][13] high-concentration electrolytes, [14][15][16] ionic liquids, [17][18][19][20] and additives. [21][22][23][24] Benefiting from the reliable electrode/electrolyte interface formed by fluorinated solvents and/or additives, the fluorinated electrolytes are helpful for suppressing the degradation behavior of cells at high voltages; on the other hand, the existence of fluorine can also enhance the inherent safety of cells.…”

Section: Introductionmentioning

confidence: 99%

Exploring fluorinated electrolyte for high‐voltage and high‐safety Li‐ion cells with Li(Ni _0. ₈ Mn ₀ _. ₁ Co ₀ _.1 ) O ₂ cathode

Kuo

Cao

Yang

et al. 2022

Intl J of Energy Research

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Summary Conventional carbonate‐based electrolytes can be oxidized at voltages above 4.3 V, causing serious cell degradation, and are highly flammable that easily induces safety hazards. In this research, a non‐combustible electrolyte for high‐voltage Li(Ni0.8Mn0.1Co0.1)O2 cathode Li‐ion cells is investigated, using propylene carbonate (PC) and 2,2,2‐trifluoroethyl acetate (TFA) as solvents. The experimental results show that the electrolyte containing TFA can improve the cathode/electrolyte interface and mitigate side reactions so that the cells containing 1 M LiPF6 in PC/TFA (3:7, v/v) and the additionally added 2 wt.% of fluoroethylene carbonate (named PT37) exhibit a more advanced cycling performance and rate performance than those with the conventional electrolyte at high voltages (3.0‐4.5 V). Additionally, more competitive safety characteristics are revealed by PT37 cells through some typical safety evaluation tests involving the accelerating rate calorimetry test, nail test, and overcharge test. The results imply that a PT37 electrolyte is a hopeful option for high‐voltage and high‐safety Li‐ion cells.

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“…Lithium-ion batteries (LIBs) are widely used in applications such as electric vehicles (EVs) and grid storage systems due to their high energy density, high specific capacity, and outstanding cycle life, especially for Li x (Ni a Co b Mn c , a + b + c = 1)O 2 (NCM) batteries with a high nickel content. , However, with the increase of nickel content in commonly polycrystalline NCM (PC-NCM) batteries, some shortages may occur due to the instability structure such as cracking, dissolution of transition metals, and formation of rock-salt phases during cycling, all of which will lead to material deterioration and capacity degradation. − …”

Section: Introductionmentioning

confidence: 99%

Synthesis of Single-Crystal LiNi_0.7Co_0.15Mn_0.15O₂ Materials for Li-Ion Batteries by a Sol–Gel Method

Guo

2021

ACS Appl. Energy Mater.

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Single-crystal cathode with a submicron particle size exhibits better cyclic stability and safety than their polycrystalline counterparts. However, high-temperature sintering, tedious steps, and unexpected product greatly hinder its industrial applications. Herein, we proposed to prepare single-crystal LiNi 0.7 Co 0.15 Mn 0.15 O 2 by a sol−gel method, which can achieve uniform mixing at the molecular level. Besides, particle agglomeration almost does not occur for the products obtained at 890 °C, so the synthesis route does not require any crushing or molten-salt addition process. Single-crystal cathode particles have a diameter of about 1 μm. Compared with the conventional polycrystalline Li-Ni 0.7 Co 0.15 Mn 0.15 O 2 , the as-prepared single-crystal material exhibits improved thermal stability, less microcrack, and lower transitionmetal dissolution. As a result, the long-life performance is improved for both coin cells and Al-shell cells. KEYWORDS: single-crystal cathodes, sol−gel, LiNi 0.7 Co 0.15 Mn 0.15 O 2 , Al-shell full cell, microcrack, Ni-rich cathode

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Over-heating triggered thermal runaway behavior for lithium-ion battery with high nickel content in positive electrode

Cited by 69 publications

References 47 publications

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

Exploring fluorinated electrolyte for high‐voltage and high‐safety Li‐ion cells with Li(Ni _0. ₈ Mn ₀ _. ₁ Co ₀ _.1 ) O ₂ cathode

Synthesis of Single-Crystal LiNi_0.7Co_0.15Mn_0.15O₂ Materials for Li-Ion Batteries by a Sol–Gel Method

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Over-heating triggered thermal runaway behavior for lithium-ion battery with high nickel content in positive electrode

Cited by 69 publications

References 47 publications

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

Development of a plug-in fuel cell electric scooter with thermally integrated storage system based on hydrogen in metal hydrides and battery pack

Exploring fluorinated electrolyte for high‐voltage and high‐safety Li‐ion cells with Li(Ni 0. 8 Mn 0 . 1 Co 0 .1 ) O 2 cathode

Synthesis of Single-Crystal LiNi0.7Co0.15Mn0.15O2 Materials for Li-Ion Batteries by a Sol–Gel Method

Contact Info

Product

Resources

About

Exploring fluorinated electrolyte for high‐voltage and high‐safety Li‐ion cells with Li(Ni _0. ₈ Mn ₀ _. ₁ Co ₀ _.1 ) O ₂ cathode

Synthesis of Single-Crystal LiNi_0.7Co_0.15Mn_0.15O₂ Materials for Li-Ion Batteries by a Sol–Gel Method