|Jmol-3D images||Image 1|
|Molar mass||151.905 g/mol|
|Melting point||200 °C (392 °F; 473 K)|
|Solubility in water||soluble|
|GHS signal word||DANGER|
|P280, P310, P305+351+338|
|EU Index||Not listed|
|R-phrases||R22, R24, R34|
|S-phrases||S26, S36, S37, S39, S45|
|Other anions||Lithium tetrafluoroborate|
|Other cations||Sodium hexafluorophosphate
|Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)|
|(what is: / ?)|
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. 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. In nonaqueous solutions hydrolysis is noticeable near 70 °C according to the following equation:
- LiPF6 + H2O → HF + PF5 + LiOH
- 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>"
- Nao Hamada; Sato Tsuneo (2004). "Lithium Hexafluorophosphate-Catalyzed Efficient Tetrahydropyranylation of Tertiary Alcohols under Mild Reaction Conditions". Synlett (10): 1802. doi:10.1055/s-2004-829550.