Effect of Amine Additives on Thermal Runaway Inhibition of SiC||NCM811 Batteries

Authors

Bo-Wen Hou, State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Long He, Department of Automotive Engineering, School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Xu-Ning Feng, State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, ChinaFollow
Wei-Feng Zhang, State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
Li Wang, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
Xiang-Ming He, Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China

Corresponding Author

Xu-Ning Feng(fxn17@mail.tsinghua.edu.cn)

Abstract

The high energy density of NCM batteries with high nickel content is a key advantage in replacing fossil fuels and promoting clean energy development, at the same time, is also a fundamental cause of serious safety hazards in batteries. Primary and secondary amines can lead to ring-opening polymerization of common ethylene carbonate electrolytes, resulting in an isolation layer between the cathode and the anode, and improving the thermal safety of the battery. In this work, the safety of batteries is considered both at the material level and at the cell level, based on the chemical reactions between amines and the battery components. At the material level, the effect of the presence or absence of amine additives on the thermal stability of the different components of the lithium-ion battery was tested by differential scanning calorimetry. At the cell level, the safety of the whole battery with and without additives was tested by using accelerating rate calorimeter to extract thermal runaway (TR) characteristic temperatures. The addition of the amine resulted in an earlier onset of some of the chemical reactions between the battery components, as well as a significant reduction in total heat release and a decrease in the maximum temperature rise rate, such that TR, was effectively suppressed.

Graphical Abstract

Keywords

Lithium-ion batteries; Thermal runaway inhibition; Amine additive; Electrolyte; Polymerization reaction

DOI Link

https://doi.org/10.13208/j.electrochem.2211141

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Publication Date

2023-08-28

Online Available Date

2023-01-06

Revised Date

2022-12-04

Received Date

2022-11-04

Recommended Citation

Bo-Wen Hou, Long He, Xu-Ning Feng, Wei-Feng Zhang, Li Wang, Xiang-Ming He. Effect of Amine Additives on Thermal Runaway Inhibition of SiC||NCM811 Batteries[J]. Journal of Electrochemistry, 2023 , 29(8): 2211141.
DOI: 10.13208/j.electrochem.2211141
Available at: https://jelectrochem.xmu.edu.cn/journal/vol29/iss8/2