| Identification | More | [Name]
Potassium hexafluorophosphate | [CAS]
17084-13-8 | [Synonyms]
POTASSIUM HEXAFLUOROPHOSPHATE
POTASSIUM HEXAFLUOROPHOSPHATE (V)
POTASSIUM HEXFLUOROPHOSPHATE
hexafluoro-phosphate(1-potassium
Phosphate(1-),hexafluoro-,potassium
POTASSIUM HEXAFLUOROPHOSPHATE, 99.999%
Potassium fluorophosphate
Potassium hexafluorophosphate, extra pure, 99%
Potassiumhexafluorophosphate,99.5%
Kaliumhexafluorophosphat
Phosphate,hexafluoro-,potassium
POTASSIUM HEXAFLUOROPHOSPHATE(V): 99.5%
POTASSIUM HEXAFLUOROPHOSHATE
Potassium hexafluorophosphate, 99% min
Potassium hexafluorophosphate, 95% min
Potassium hexafluorophosphate, 99% min free fluid max. 0.3%
Potassium fluophosphate
Potassium hexafluorophosphate, 99%, extra pure | [EINECS(EC#)]
241-143-0 | [Molecular Formula]
F6KP | [MDL Number]
MFCD00011412 | [Molecular Weight]
184.06 | [MOL File]
17084-13-8.mol |
| Chemical Properties | Back Directory | [Appearance]
white crystalline powder | [Melting point ]
575 °C(lit.)
| [Boiling point ]
decomposes [STR93] | [density ]
2.75 g/mL at 25 °C(lit.)
| [storage temp. ]
Refrigerator | [solubility ]
Methanol (Slightly), Water (Soluble) | [form ]
Powder | [color ]
White | [Specific Gravity]
2.55 | [Stability:]
Stable. Incompatible with strong acids. Thermal decomposition may generate HF, phosphorus oxides and phosphine. | [Water Solubility ]
93 g/L (25 ºC) | [Sensitive ]
Hygroscopic | [InChI]
InChI=1S/F6P.K/c1-7(2,3,4,5)6;/q-1;+1 | [InChIKey]
YZDGRYDIGCWVND-UHFFFAOYSA-N | [SMILES]
[P+5]([F-])([F-])([F-])([F-])([F-])[F-].[K+] | [CAS DataBase Reference]
17084-13-8(CAS DataBase Reference) | [EPA Substance Registry System]
17084-13-8(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
white crystalline powder | [Uses]
A soluble neutral salt used for synthesis. | [Hazard]
Toxic by ingestion.
| [Description]
Potassium hexafluorophosphate (17084-13-8), abbreviated as KPF6, is a associated electrolyte. In battery systems, it acts as an electrolyte additive in anode-less lithium metal batteries, lithium-sulphur batteries and solid-state batteries; by forming a protective shielding effect and modulating the solid-state electrolyte interface, it enhances cycling stability, ionic conductivity and electrochemical performance [1-3].
In perovskite solar cells, KPF6 is used as an interface modification material; by treating the SnO2 quantum dot/perovskite interface, it can passivate defects and enhance stable photoconversion efficiency [4].
| [Preparation]
Potassium hexafluorophosphate (17084-13-8) is prepared by reacting phosphorus pentachloride, potassium chloride, and hydrofluoric acid in liquid hydrogen fluoride. The reaction equation is: PCl? + KCl + 6HF → KPF? + 6HCl.
| [Purification Methods]
Crystallise it from alkaline aqueous solution, using polyethylene vessels, or from 95% EtOH, and dry it in a vacuum desiccator over KOH. [Kloditz Z Anorg Allgem Chem 284 144 1956, Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 196 1963.] | [References]
[1]
Hagos, T. M., Berhe, G. B., Hagos, T. T., Bezabh, H. K., Abrha, L. H., Beyene, T. T., Huang, C.-J., Yang, Y.-W., Su, W.-N., Dai, H., Hwang, B.-J. (2019). Dual electrolyte additives of potassium hexafluorophosphate and tris (trimethylsilyl) phosphite for anode-free lithium metal batteries. Electrochimica Acta, 316, 52–59. https://doi.org/10.1016/j.electacta.2019.05.061
[2]
Li, J., Liu, S., Cui, Y., Zhang, S., Wu, X., Xiang, J., Li, M., Wang, X., Xia, X., Gu, C., Tu, J. (2020). Potassium Hexafluorophosphate Additive Enables Stable Lithium–Sulfur Batteries. ACS Applied Materials & Interfaces, 12(50), 56017–56026. https://doi.org/10.1021/acsami.0c17406
[3]
Li, J., Liang, J., Ren, Z., Shi, C., Li, Y., Zhang, L., Zhang, Q., He, C., Ren, X. (2022). Insights of potassium hexafluorophosphate additive in solid polymer electrolyte for realizing high performance all-solid-state lithium metal batteries. Electrochimica Acta, 429, 141061. https://doi.org/10.1016/j.electacta.2022.141061
[4]
Wang, Z., Wu, T., Xiao, L., Qin, P., Yu, X., Ma, L., Xiong, L., Li, H., Chen, X., Wang, Z., Wu, T., Xiao, M. L., Qin, P., Yu, D. X., Ma, D. L., Xiong, D. L., Li, D. H., Chen, X. (2021). Multifunctional potassium hexafluorophosphate passivate interface defects for high efficiency perovskite solar cells. Journal of Power Sources, 488, 229451. https://doi.org/10.1016/j.jpowsour.2021.229451
|
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS05 | [Signal word ]
Danger | [Hazard statements ]
H314 | [Precautionary statements ]
P260-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338 | [Hazard Codes ]
C,Xi | [Risk Statements ]
R34:Causes burns.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S27:Take off immediately all contaminated clothing .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 3260 8/PG 2
| [WGK Germany ]
1
| [Hazard Note ]
Irritant | [TSCA ]
T | [REACH Registrations]
Active | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28269090 | [Storage Class]
8A - Combustible corrosive hazardous materials | [Hazard Classifications]
Eye Dam. 1
Skin Corr. 1B |
|
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JYS Gold
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Alfa Aesar
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Energy Chemical
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