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Keywords = ethoxy (pentafluoro) cyclotriphosphazene

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12 pages, 4189 KiB  
Article
Thermal Effect and Mechanism Analysis of Flame-Retardant Modified Polymer Electrolyte for Lithium-Ion Battery
by Zhi-Hao Wu, An-Chi Huang, Yan Tang, Ya-Ping Yang, Ye-Cheng Liu, Zhi-Ping Li, Hai-Lin Zhou, Chung-Fu Huang, Zhi-Xiang Xing, Chi-Min Shu and Jun-Cheng Jiang
Polymers 2021, 13(11), 1675; https://doi.org/10.3390/polym13111675 - 21 May 2021
Cited by 39 | Viewed by 4743
Abstract
In recent years, the prosperous electric vehicle industry has contributed to the rapid development of lithium-ion batteries. However, the increase in the energy density of lithium-ion batteries has also created more pressing safety concerns. The emergence of a new flame-retardant material with the [...] Read more.
In recent years, the prosperous electric vehicle industry has contributed to the rapid development of lithium-ion batteries. However, the increase in the energy density of lithium-ion batteries has also created more pressing safety concerns. The emergence of a new flame-retardant material with the additive ethoxy (pentafluoro) cyclotriphosphazene can ameliorate the performance of lithium-ion batteries while ensuring their safety. The present study proposes a new polymer composite flame-retardant electrolyte and adopts differential scanning calorimetry (DSC) and accelerating rate calorimetry to investigate its thermal effect. The study found that the heating rate is positively correlated with the onset temperature, peak temperature, and endset temperature of the endothermic peak. The flame-retardant modified polymer electrolyte for new lithium-ion batteries has better thermal stability than traditional lithium-ion battery electrolytes. Three non-isothermal methods (Kissinger; Kissinger–Akahira–Sunose; and Flynn–Wall–Ozawa) were also used to calculate the kinetic parameters based on the DSC experimental data. The apparent activation energy results of the three non-isothermal methods were averaged as 54.16 kJ/mol. The research results can provide valuable references for the selection and preparation of flame-retardant additives in lithium-ion batteries. Full article
(This article belongs to the Special Issue Functional Polymer for Battery Applications)
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