作为离子电池的灭火剂候选者,二二二三甲基碳酸盐
Maryam Khan-Ghauri1, Pascal Diévart2,3, Claire M Grégoire1
1J. Mike Walker '66 Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843, United States.
Energy & fuels : an American Chemical Society journal
|March 19, 2025
概括
乙二二三乙烯碳酸盐 (BtFEC) 显示为离子电池的灭火剂具有前景. 来自冲击管和微流反应器研究的实验数据被用来改进燃烧模型,提高其预测BtFEC行为的准确性.
科学领域:
- 燃烧科学和化学动力学.
- 材料科学用于能源储存安全.
背景情况:
- 离子电池 (LIB) 由于易燃的电解质组件,存在着火灾风险.
- 二二三乙烯碳酸盐 (BtFEC) 是LIBs的一种潜在的灭火剂.
研究的目的:
- 实验性地研究BtFEC的燃烧特性.
- 改进和验证BtFEC燃烧的动力模型.
- 评估BtFEC在高温环境中作为灭火剂的有效性.
主要方法:
- 冲击管实验通过OH*化学发光和CO时间史通过激光吸收光谱测量点火延迟时间 (IDT).
- 微流反应器 (MFR) 实验使用福里埃变换红外光谱法 (FTIR) 进行关键物种测量 (BtFEC,CO,CO2,CHF3,CF2O,C2F6,HF).
- 使用新的高级计算,灵敏度,生产率和反应途径分析以及更新的反应速率来改进动力学模型.
主要成果:
- 关于BtFEC燃烧特性的实验数据是通过各种等效比率 (φ = 0.5,1.0,1.5) 和温度 (1200-1650 K在冲击管中,800-1300 K在MFR中) 获得的.
- 来自MFR的新物种测量提供了模型验证的数据集.
- 使用新的计算和实验数据进行模型改进,与实验结果的一致性得到改善.
结论:
- 该研究成功生成了BtFEC燃烧的关键实验数据.
- 精细的运动模型在预测BtFEC行为方面显示了更高的准确性.
- 这些发现有助于开发使用BtFEC作为灭火剂的更安全的离子电池.
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