Correlation between thermal stabilities of nickel-rich cathode materials and battery thermal runaway

Ying Sun; Dongsheng Ren; Guijuan Liu; Daobin Mu; Li Wang; Borong Wu; Jianhong Liu; Ningning Wu; Xiangming He

doi:10.1002/er.7143

Correlation between thermal stabilities of nickel-rich cathode materials and battery thermal runaway

Ying Sun, Dongsheng Ren, Guijuan Liu, Daobin Mu^*, Li Wang, Borong Wu^*, Jianhong Liu, Ningning Wu, Xiangming He^*

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Thermal runaway is a major safety concern hindering the large-scale application of Ni-rich lithium ion batteries. In this paper, the thermal runaway behaviors of lithium ion batteries with LiNi_0.6Co_0.2Mn_0.2O₂ and LiNi_0.8Co_0.1Mn_0.1O₂ cathode materials are investigated using accelerating rate calorimetry. The onset temperature of thermal runaway for the battery with LiNi_0.8Co_0.1Mn_0.1O₂ cathode is 20°C lower than that with LiNi_0.6Co_0.2Mn_0.2O₂ cathode, demonstrating that battery thermal runaway is highly correlated with cathode chemistry. In situ X-ray diffraction and thermogravimetry tests further reveal that the LiNi_0.8Co_0.1Mn_0.1O₂ exhibits more severe structural change and oxygen generation compared to LiNi_0.6Co_0.2Mn_0.2O₂, leading to worsen of battery thermal runaway behavior. Based on the correlation between cathode thermal stability and battery thermal runaway, an approach by changing cathode morphology from polycrystal to single crystal is proposed to mitigate the thermal runaway of battery with LiNi_0.8Co_0.1Mn_0.1O₂ cathode. The single crystal LiNi_0.8Co_0.1Mn_0.1O₂ can reduce cationic distribution and enhance cathode thermal stability, and thus improve the safety performance of large format Ni-rich battery by postponing thermal runaway by 13°C and reducing temperature rate.

Original language	English
Pages (from-to)	20867-20877
Number of pages	11
Journal	International Journal of Energy Research
Volume	45
Issue number	15
DOIs	https://doi.org/10.1002/er.7143
Publication status	Published - Dec 2021

Keywords

Ni-rich cathodes
lithium-ion batteries
safety
thermal runaway
thermal stability

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/er.7143

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@article{9083cf22abeb4b3b988d69a1e9e0fa4d,

title = "Correlation between thermal stabilities of nickel-rich cathode materials and battery thermal runaway",

abstract = "Thermal runaway is a major safety concern hindering the large-scale application of Ni-rich lithium ion batteries. In this paper, the thermal runaway behaviors of lithium ion batteries with LiNi0.6Co0.2Mn0.2O2 and LiNi0.8Co0.1Mn0.1O2 cathode materials are investigated using accelerating rate calorimetry. The onset temperature of thermal runaway for the battery with LiNi0.8Co0.1Mn0.1O2 cathode is 20°C lower than that with LiNi0.6Co0.2Mn0.2O2 cathode, demonstrating that battery thermal runaway is highly correlated with cathode chemistry. In situ X-ray diffraction and thermogravimetry tests further reveal that the LiNi0.8Co0.1Mn0.1O2 exhibits more severe structural change and oxygen generation compared to LiNi0.6Co0.2Mn0.2O2, leading to worsen of battery thermal runaway behavior. Based on the correlation between cathode thermal stability and battery thermal runaway, an approach by changing cathode morphology from polycrystal to single crystal is proposed to mitigate the thermal runaway of battery with LiNi0.8Co0.1Mn0.1O2 cathode. The single crystal LiNi0.8Co0.1Mn0.1O2 can reduce cationic distribution and enhance cathode thermal stability, and thus improve the safety performance of large format Ni-rich battery by postponing thermal runaway by 13°C and reducing temperature rate.",

keywords = "Ni-rich cathodes, lithium-ion batteries, safety, thermal runaway, thermal stability",

author = "Ying Sun and Dongsheng Ren and Guijuan Liu and Daobin Mu and Li Wang and Borong Wu and Jianhong Liu and Ningning Wu and Xiangming He",

note = "Publisher Copyright: {\textcopyright} 2021 John Wiley & Sons Ltd.",

year = "2021",

month = dec,

doi = "10.1002/er.7143",

language = "English",

volume = "45",

pages = "20867--20877",

journal = "International Journal of Energy Research",

issn = "0363-907X",

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TY - JOUR

T1 - Correlation between thermal stabilities of nickel-rich cathode materials and battery thermal runaway

AU - Sun, Ying

AU - Ren, Dongsheng

AU - Liu, Guijuan

AU - Mu, Daobin

AU - Wang, Li

AU - Wu, Borong

AU - Liu, Jianhong

AU - Wu, Ningning

AU - He, Xiangming

PY - 2021/12

Y1 - 2021/12

N2 - Thermal runaway is a major safety concern hindering the large-scale application of Ni-rich lithium ion batteries. In this paper, the thermal runaway behaviors of lithium ion batteries with LiNi0.6Co0.2Mn0.2O2 and LiNi0.8Co0.1Mn0.1O2 cathode materials are investigated using accelerating rate calorimetry. The onset temperature of thermal runaway for the battery with LiNi0.8Co0.1Mn0.1O2 cathode is 20°C lower than that with LiNi0.6Co0.2Mn0.2O2 cathode, demonstrating that battery thermal runaway is highly correlated with cathode chemistry. In situ X-ray diffraction and thermogravimetry tests further reveal that the LiNi0.8Co0.1Mn0.1O2 exhibits more severe structural change and oxygen generation compared to LiNi0.6Co0.2Mn0.2O2, leading to worsen of battery thermal runaway behavior. Based on the correlation between cathode thermal stability and battery thermal runaway, an approach by changing cathode morphology from polycrystal to single crystal is proposed to mitigate the thermal runaway of battery with LiNi0.8Co0.1Mn0.1O2 cathode. The single crystal LiNi0.8Co0.1Mn0.1O2 can reduce cationic distribution and enhance cathode thermal stability, and thus improve the safety performance of large format Ni-rich battery by postponing thermal runaway by 13°C and reducing temperature rate.

AB - Thermal runaway is a major safety concern hindering the large-scale application of Ni-rich lithium ion batteries. In this paper, the thermal runaway behaviors of lithium ion batteries with LiNi0.6Co0.2Mn0.2O2 and LiNi0.8Co0.1Mn0.1O2 cathode materials are investigated using accelerating rate calorimetry. The onset temperature of thermal runaway for the battery with LiNi0.8Co0.1Mn0.1O2 cathode is 20°C lower than that with LiNi0.6Co0.2Mn0.2O2 cathode, demonstrating that battery thermal runaway is highly correlated with cathode chemistry. In situ X-ray diffraction and thermogravimetry tests further reveal that the LiNi0.8Co0.1Mn0.1O2 exhibits more severe structural change and oxygen generation compared to LiNi0.6Co0.2Mn0.2O2, leading to worsen of battery thermal runaway behavior. Based on the correlation between cathode thermal stability and battery thermal runaway, an approach by changing cathode morphology from polycrystal to single crystal is proposed to mitigate the thermal runaway of battery with LiNi0.8Co0.1Mn0.1O2 cathode. The single crystal LiNi0.8Co0.1Mn0.1O2 can reduce cationic distribution and enhance cathode thermal stability, and thus improve the safety performance of large format Ni-rich battery by postponing thermal runaway by 13°C and reducing temperature rate.

KW - Ni-rich cathodes

KW - lithium-ion batteries

KW - safety

KW - thermal runaway

KW - thermal stability

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SN - 0363-907X

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SP - 20867

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JO - International Journal of Energy Research

JF - International Journal of Energy Research

IS - 15

ER -

Correlation between thermal stabilities of nickel-rich cathode materials and battery thermal runaway

Abstract

Keywords

UN SDGs

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