| 六氟偏磷酸锂的热分解动力 |
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| 引用本文： | 刘晓敏,杨晖.六氟偏磷酸锂的热分解动力[J].化学物理学报,2013,26(4):467-470. |
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| 作者姓名： | 刘晓敏 杨晖 |
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| 作者单位： | 南京工业大学材料科学与工程学院，南京210009;南京工业大学材料科学与工程学院，南京210009 |
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| 摘 要： | 采用在线耦合TGA-FTIR技术，分别研究了非等温和等温两种条件下六氟磷酸锂(LiPF6)的热分解动力学和其气态产物. 结果表明LiPF6分解反应为单步反应，其产物为固态LiF和气态PF5. 在两种条件下，LiPF6分解动力学均遵循基于柱坐标对称的二维相界面移动模型. LiPF6分解活化能为104 kJ/mol(非等温)和92 kJ/mol(等温).
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| 关 键 词： | 六氟偏磷酸锂，分解动力学，在线耦合TGA-FTIR |
| 收稿时间： | 2013/3/12 0:00:00 |
Kinetics of Thermal Decomposition of Lithium Hexafluorophosphate |
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| Xiao-min Liu and Hui Yang.Kinetics of Thermal Decomposition of Lithium Hexafluorophosphate[J].Chinese Journal of Chemical Physics,2013,26(4):467-470. |
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| Authors: | Xiao-min Liu and Hui Yang |
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| Institution: | College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China;College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | With on-line coupled thermo-gravimetric analyzer-Fourier transform infrared spectrometer technique, the thermal decomposition of lithium hexafluorophosphate (LiPF6) and its gas evolution at inert environment (H2O<10 ppm) were studied under both non-isothermal and isothermal conditions. The results showed that the LiPF6 decomposition is a single-stage reaction with LiF as final residue and PF5 as gas product. In addition, its decomposi-tion kinetics was determined as 2D phase boundary movement (cylindrical symmetry) under both non-isothermal and isothermal conditions. Furthermore, the activation energy of LiPF6 decomposition was calculated as 104 and 92 kJ/mol for non-isothermal and isothermal con-ditions, respectively. |
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| Keywords: | Lithium hexafluorophosphate Decomposition kinetics Online coupled thermo-gravimetric analyzer-Fourier transform infrared spectrometer |
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