Lithium hexafluorophosphate
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| Names | |
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| IUPAC name
lithium hexafluorophosphate
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| Identifiers | |
21324-40-3  |
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| ChemSpider | 146939 |
| Jmol 3D model | Interactive image |
| PubChem | 23688915 |
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| Properties | |
| LiPF6 | |
| Molar mass | 151.905 g/mol |
| Appearance | white powder |
| Density | 1.5 g/cm3 |
| Melting point | 200 °C (392 °F; 473 K) |
| soluble | |
| Vapor pressure | {{{value}}} |
| Related compounds | |
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Other anions
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Lithium tetrafluoroborate |
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Other cations
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Sodium hexafluorophosphate Potassium hexafluorophosphate Ammonium hexafluorophosphate |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Lithium hexafluorophosphate is an inorganic compound with the formula LiPF6. It is a white crystalline powder. It is used in commercial secondary batteries, an application that exploits its high solubility in nonpolar solvents. Specifically, solutions of lithium hexafluorophosphate in propylene carbonate and dimethoxyethane serve as an electrolyte in lithium batteries.[1] This application also exploits the inertness of the hexafluorophosphate anion toward strong reducing agents, such as lithium metal.
The salt is relatively stable thermally, but loses 50% weight at 200 °C (392 °F). In nonaqueous solutions hydrolysis is noticeable near 70 °C (158 °F)[2] according to the following equation:
- LiPF6 + H2O → HF + PF5 + LiOH
LiPF6 also catalyses the tetrahydropyranylation of tertiary alcohols.[3]
References
- ↑ John B. Goodenough, Youngsik Kim "Challenges for Rechargeable Li Batteries" Chem. Mater., 2010, volume 22, pp 587–603. doi:10.1021/cm901452z
- ↑ "Xu, Kang. "Nonaqueous Liquid Electrolytes for Lithium-Based Rechargeable Batteries."Chemical Reviews 2004, pp. 104, pp. 4303-418. <http://pubs.acs.org/doi/pdf/10.1021/cr030203g>"
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
