Preparation and characterization of lithium hexafluorophosphate for lithium-ion battery electrolyte
| Autor: | Zhixing Wang, Peng Wenjie, Qi-yang Hu, Li Xinhai, Huajun Guo, Jian-wen Liu, Yunhe Zhang |
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| Rok vydání: | 2010 |
| Předmět: |
Inorganic chemistry
Metals and Alloys Electrolyte Lithium hexafluorophosphate Geotechnical Engineering and Engineering Geology Condensed Matter Physics Lithium-ion battery Thermogravimetry chemistry.chemical_compound chemistry Differential thermal analysis Materials Chemistry Phosphorus pentafluoride Thermal stability Acetonitrile |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 20:344-348 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(09)60144-8 |
| Popis: | A promising preparation method for lithium hexafluorophosphate (LiPF 6 ) was introduced. Phosphorus pentafluoride (PF 5 ) was first prepared using CaF 2 and P 2 O 5 at 280°C for 3 h. LiPF 6 was synthesized in acetonitrile solvent by LiF and PF 5 at room temperature (20−30) for 4 h°C. The synthesized LiPF 6 was characterized by infrared spectrometry and X-ray diffraction(XRD). Atomic absorption and ion chromatography results show that the purity of synthesized LiPF 6 reaches 99.98%. Thermal stability of self-synthesized LiPF 6 was analyzed by differential thermal analysis and thermogravimetry. The results indicate that the self-synthesized LiPF 6 has higher purity, lower impurity contents and better thermal stability than the commercial LiPF 6 . |
| Databáze: | OpenAIRE |
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