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200913

Sigma-Aldrich

Potassium hexafluorophosphate

≥99%

Synonym(s):

Monopotassium hexafluorophosphate

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About This Item

Linear Formula:
KPF6
CAS Number:
17084-13-8
Molecular Weight:
184.06
EC Number:
241-143-0
MDL number:
MFCD00011412
UNSPSC Code:
12352302
PubChem Substance ID:
24851982
NACRES:
NA.23

Quality Level

200

Assay

≥99%

form

solid

technique(s)

ion chromatography: suitable

mp

575 °C (lit.)

density

2.75 g/mL at 25 °C (lit.)

SMILES string

[K+].F[P-](F)(F)(F)(F)F

InChI

1S/F6P.K/c1-7(2,3,4,5)6;/q-1;+1

InChI key

YZDGRYDIGCWVND-UHFFFAOYSA-N

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Application

Potassium hexafluorophosphate can be used as an electrolyte additive to improve the:
  • Electrochemical performance of an anode-free lithium metal battery.
  • Cycling stability and Li Coulombic efficiency of lithium-sulfur(Li–S) batteries.
It can also be used as interface modification material to passivate interface defects in perovskite solar cells.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000321934
0000347360
0000362600
WXBF4654V
0000347360

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Jingru Li et al.
ACS applied materials & interfaces, 12(50), 56017-56026 (2020-12-04)
Uncontrollable dendrite growth and low Coulombic efficiency are the two main obstacles that hinder the application of rechargeable Li metal batteries. Here, an optimized amount of potassium hexafluorophosphate (KPF6, 0.01 M) has been added into the 2 M LiTFSI/ether-based electrolyte
Ruhamah Yunis et al.
Physical chemistry chemical physics : PCCP, 21(23), 12288-12300 (2019-05-30)
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Scientific reports, 7(1), 3101-3101 (2017-06-10)
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